Checklist for all new typings and type combinations in Galar

New Typings:

1. Flying/Steel
2. Flying/Water

New Type Combination:

1. Dark/Fairy
2. Electric/Dark
3. Poison/Fairy

Former unique type combination:

1. Steel/Dragon
2. Dark/Normal

Former unique typing:

1. Steel/Dragon
2. Dark/Normal

Remaining type combinations:

1. Grass/Fire
2. Ground/Fighting
3. Ghost/Rock
4. Fire/Ice
5. Electric/Fighting
6. Normal/Steel
7. Normal/Ghost
8. Ice/Normal
9. Ice/Poison
10. Bug/Ice
11. Bug/Psychic
12. Bug/Dark
13. Bug/Dragon
14. Electric/Poison
15. Fairy/Fire
16. Fairy/Ground
17. Fairy/Fighting
18. Poison/Steel
19. Poison/Psychic
20. Normal/Rock
21. Normal/Poison
22. Bug/Normal

Completed: Water, Flying

1 remaining: Grass, Dragon, Dark

2 Remaining: Ground, Ghost, Rock, Steel, Psychic, Electric

3 Remaining: Fighting, Fire, Fairy,

4 Remaining: Ice

5 Remaining: Bug, Poison

6 Remaining: Normal, 

Non-Bug, Ice, Normal, Poison, Fairy combinations:

1. Grass/Fire
2. Ground/Fighting
3. Dark/Electric
4. Rock/Ghost
5. Fire/Ice
6. Electric/Fighting

Bug, Ice, Normal, Poison, Fairy combinations:

1. Fairy/Poison, 
2. Bug/Normal, 
3. Normal/Ice, 
4. Normal/Poison, 
5. Bug/Ice
6. Ice/Poison

Short-term notes on new Pokémon for Sword and Shield, June 5, 2019

Wooloo:
*Wooloo's name, typing, abilities, and height/weight strongly implies it will have another evolution, which will likely give it a new type.
*Since its description notes it rolling away, it will likely get Rollout and Defense Curl like Skiddo.
*Basically it is just another Skiddo.
*It shares the same weight as Pikachu, Magnemite, Sentret, Smoochum, Helioptile and Yungoos.
*Its Fluffy means weakness to Fire, which might imply it will get either an unrelated type, or Grass.
*Its Egg Group will likely be Field.

Gossifleur-Eldegoss:
*Their names comes from a cotton genus.
*Gossifleur's name is obviously French, because this is Kalos 2.0
*Their signature ability Cotton Down implies we will get more Cotton Pokémon in the future generations. Great/sarcasm]
*Eldegoss' weight is the same as Exeggcute, Torchic, Sewaddle and Scatterbug, strongly implying it is not the final form.
*However, its height is the same as Cherrim, so there is a low chance it might be.
*One of its Max attacks uses mushrooms from Spore, which implies Powder moves will gain perfect accuracy when Dynamaxed.
*Both Cottonee and Hoppip-lines are maxed out in terms of Abilities, so Swirlix, Mareep, Swablu and Furfrou are the only likely Cotton Down obtainers, which is to say it will likely remain as a signature Ability for Gossifleur-line since none of these guys are Grass-type.

Dreadnaw:
*It shares the same height as Kecleon, Nosepass and Basculin and its weight is similar to Rhyhorn, so it is more than likely a single stager.
*Its ability implies it will learn Ice Fang, Crunch, Bite and possibly Poison Fang.
*Its Egg Groups will likely be Water 1 and Monster.
*Not much to say here really. It is an angry snapping turtle. At least it is primary Water instead of primary Rock.

Corviknight:
*Despite its design, it is actually Flying/Steel, inverse typing of Skarmory's Steel/Flying.
*Its size is the same as Mega Pidgeot, and its weight is the same as Crobat and Quagsire.
*He's a big guy.
*He is seen using Brave Bird or a similar move to Sawk, so he will likely be physically offensive compared to Skarmory and Celesteela.

Zacian and Zamazenta:
*Zacian is holding a sword, while Zamazenta is a shield.
*Zacian looks more sleek-looking, while Zamazenta is more bulky, so the difference will likely be on Speed.
*Their names refer to Saltire(Blue+White, or possibly Scottish blue+Irish green) and Union Jack(blue+red)
*Zamazenta has the samurai ponytail.
*Their designs are more based off Romus and Remulus than anything British, alluding to Roman rule in Britain.
*Their wings are likely a reference to various guardian canines in Asian mythologies like shiba inu and various shvan in Hindu mythology, but their design is most likely based on the Enfield beast, one of the heraldic beasts of England, though it actually originates from Ireland.
*Their Asian designs are a reference to the fact that Leon, our lovely Galarian Champion, is Indian.

Speculative Galar regional dex types

1. Grass->Grass->Grass/Dark
2. Fire->Fire->Fire/Ground
3. Water->Water->Water/Poison
4. Normal->Normal/Poison*
5. Normal/Flying->Electric/Flying->Electric/Flying
6. Bug->Bug/Ground->Bug/Ground
7. Grass->Grass/Water
8. Grass->Grass/Fire*
9. Psychic->Psychic/Ghost
10. Bug/Psychic->Bug/Psychic*
11. Normal/Fairy
12. Electric/Grass->Electric/Grass
13. Electric/Ground
14. Fire/Fairy->Fire/Fairy*
15. Fighting->Fighting/Ground*
16. Grass->Grass/Rock
17. Ghost/Rock->Ghost/Rock*
18. Rock/Fire->Rock/Fire
19. Flying/Rock->Flying/Rock
20. Ground/Fairy->Ground/Fairy*
21. Water/Ice
22. Dark/Electric->Dark/Electric*
23. Steel/Poison->Steel/Poison*
24. Poison/Grass->Poison/Fairy*
25. Ice/Normal->Ice/Normal*
26. Bug/Ice->Bug/Ice->Bug/Ice*
27. Dragon/Bug->Dragon/Bug->Dragon/Bug*
28. Steel: Eeveelution
29. Dragon: Eeveelution
30. Steel/Fighting
31. Steel/Psychic
32. Steel/Dragon
33. Ice/Fairy
34. Dark/Ghost
35. Fire/Ice*

*Unused combination.

Long form speculation for Galar starters

Need to get this out of my system.

Additional thoughts on Galar Region

Unique type combinations that might end:

1. Bug: Bug/Ghost and Bug/Fairy might work, but Bug/Ground is more likely.
2. Dark: Dark/Normal and Dark/Ground might work.
3. Dragon: Dragon/Fighting and Dragon/Rock might work.
4. Electric: Electric/Ground and Electric/Grass might work.
5. Fairy: Fairy/Flying and Fairy/Ice might work.
6. Fighting: Fighting/Flying and Fighting/Poison might work.
7. Fire: Fire/Rock and Fire/Steel might work.
8. Flying: Poison/Flying and Flying might work, but Ice/Flying is more likely.
9. Ghost: Water/Ghost and Ice/Ghost might work, but Psychic/Ghost is more likely.
10. Grass: Grass/Water and Rock/Grass might work.
11. Ground: Poison/Ground and Ground/Grass might work.
12. Ice: Ice/Rock and Grass/Ice might work.
13. Normal: Normal/Grass and Normal/Water might work.
14. Poison: Poison/Fire and Poison/Rock might work.
15. Psychic: Psychic/Ground and Psychic/Ice might work.
16. Rock: Rock/Dragon and Rock/Electric might work but Rock/Fairy is more likely.
17. Steel: Steel/Water and Steel/Dragon might work.
18. Water: Water/Grass and Water/Normal might work.

Unused type combinations that might appear:

1. Bug: Bug/Dark or Bug/Psychic might work.
2. Dark: Dark/Fairy or Dark/Electric might work.
3. Dragon: Dragon/Bug is the last remaining type combination.
4. Electric: Electric/Fighting or Electric/Poison might work.
5. Fairy: Fairy/Fighting or Fairy/Ground might work.
6. Fighting: Fighting/Ground or Fighting/Electric might work.
7. Fire: Fire/Ice or Fire/Grass might work.
8. Flying: None remains.
9. Ghost: Rock/Ghost or Normal/Ghost might work.
10. Grass: Grass/Fire is the last remaining type combination.
11. Ground: Ground/Fairy or Ground/Fighting might work.
12. Ice: Ice/Normal or Ice/Bug might work.
13. Normal: Normal/Rock or Normal/Poison might work.
14. Poison: Poison/Psychic or Poison/Steel might work.
15. Psychic: Psychic/Poison or Psychic
16. Rock: Rock/Normal or Rock/Ghost might work.
17. Steel: Normal/Steel or Poison/Steel might work
18. Water: None remains.

TM Speculations for Gyms:

1. Grass: Grass Knot
2. Water: New TM
3. Fire: Will-O-Wisp
4. Electric: Volt Switch
5. Ground: Bulldoze
6. Fairy: New TM
7. Dragon: New TM
8. Ice: Aurora Veil

Looking at the type combination distribution:

To have 72 species in next generation (average 9 per generation):

1. Normal: +7

To have 64 species in next generation (average 8 per generation):

1. Water: +2

To have 40 species in next generation (average 5 per generation):

1. Grass: +2
2. Psychic: +5

To have 32 species in next generation (average 4 per generation):

1. Fire: +1
2. Electric: +5
3. Normal/Flying: +6

To have 24 species in next generation (average 3 per generation):

1. Fighting: +2
2. Bug: +6
3. Fairy: +8

To have 16 species in next generation(average 2 per generation):

1. Poison, Ground: +1
2. Bug/Flying, Grass/Poison, Ice: +2
3. Bug/Poison, Dragon: +4
4. Rock, Dark: +5
5. Rock/Water: +6
6. Rock/Ground, Water/Ground, Ghost: +7

To have 8 species in next generation(average 1 per generation):

1. Steel/Psychic, Water/Flying, Grass/Flying, Psychic/Flying, Steel: +1
2. Ground/Dragon, Rock/Steel, Bug/Steel, Psychic/Fairy, Water/Poison, Fire/Flying, Fire/Fighting, Dragon/Flying, Water/Ice, Ghost/Grass, Bug/Grass: +2
3. Poison/Dark, Electric/Flying, Normal/Fairy, Bug/Water, Bug/Rock, Dark/Flying, Grass /Fairy, Water/Dark, Water/Psychic: +3

To have 8 species in next generation(average 1 per generation):

1. Bug/Electric, Psychic/Fighting, Water/Fairy, Electric/Steel, Ground/Ghost, Normal/Fighting, Steel/Ground, Ghost/Fire, Dark/Dragon, Rock/Flying: +4
2. Normal/Psychic, Dark/Psychic, Ground/Flying, Steel/Fairy, Fire/Ground, Water/Electric, Grass/Steel, Dragon/Fire, Dark/Fighting, Water/Grass, Poison/Flying, Rock/Electric, Steel/Ghost, Dark/Fire, Fire/Psychic, Bug/Fighting, Ghost/Flying, Ghost/Poison, Ground/Ice, Ground/Dark, Grass/Fighting, Grass/Dark, Grass/Psychic: +5

• Water, Grass and Fire are already almost confirmed to keep their averages.
• Poison, Ground, Steel and Fighting might keep their averages.
• Ice and Dragon are less likely to keep their averages. Rock and Dark will likely drop out further.

Move addition speculations for confirmed returning species:

Random thoughts on Pokémon Sword and Shield

New type busted:
The most important thing here is that the possibility of a new elemental type has been mostly denied. This means this generation will go through the remaining type combinations as usual, meaning all possible type combinations will end next generation after SwSh (Gen 9).

A seemingly expansive regional dex:
While the actual region seems muted, we will likely have a dense regional dex. It is unclear if it will be larger than Kalos, because the area covered is much smaller, but it will be larger than Alola at least. Currently there are already 30 confirmed species for the regional dex that are coming from older generations.

No major gimmick change:
While it is too early to say, the titles do not focus on a new gimmick outside of the Japanese titles, but rather the legendaries. This does not mean there won't be new gimmick(which is unlikely), but it does mean it won't be important like Megas and Z-moves.

The general consensus seems to be that new gimmick will be audience stat boosts in Gyms and Wi-Fi battles, like contests. But we will have a cross-generational form mechanic as well, and we don't know what that will be.

A limited introduction:
The first teaser has not showcased the legendaries, which is rather different from XY and SM. This confirms this region will include a smaller number of Pokémon than XY, though how small remains to be seen. Because there will be more new Pokémon in DPPt remakes and Let's GO Crystal remakes than US/UM and LGP/E, this count might end up larger than XY at the very end of the generation, but not in these games.

A colder region:
Well, it is Britain(actually, just England with some Scottish areas sprinkled to apocryphal areas). But more importantly it is a less densely populated region, which is inaccurate for England(one of the most densely populated areas of the world). This is likely so there can be more varied Ice-types here, after the long duration of limited Ice-types.

Gyms:
So far, we only have a confirmed Grass Gym. Fire/Steel, Electric, Poison/Fairy, Water, Ice, Dragon, Ground/Rock are assumed. Ground seems more likely than Rock, and Fire is more likely than Steel because it seems to be the third Gym.
Overall the structure seems to be like this, give or take:

1. Grass
2. Water
3. Fire
4. Electric
5. Ground
6. Fairy
7. Dragon
8. Ice

ehh.

Other guesses:

1. My expectation for 65 species still remain, and I still expect around 400-500 Pokémon in the regional dex.
2. Because the new gimmick seems to be not Ability based, we will probably see more unique Abilities yet again.
3. My guess for Elite Four is Bug/Flying/Poison/Normal with a Steel champion again.
4. New Eeveelution/s will be either Dragon and Steel or just Steel.
5. There probably won't be a lot of side-evos or pre-evos, if any. New form mechanic is still unknown.
6. Titles suggest the legendaries will be remarkably similar to each other, just differing in stat distribution substantially. Lots of people have mentioned that the titles probably refer to Excalibur/Caliburn and King Arthur's shield, Pridwen/Wynebgwrthucher, but sounds too much like RagnaLordmon's bases.

Rough guesses for each type looking at the map:

1. *Bug: Bug is going to a field day with this. Though even generations tend to introduce a low amount of Bug-types, Britain has tons of different insects. Even if we don't get a ton of new Pokémon, we will see return of a few with new tricks(we already know Grubbin is here, for example).
2. *Dark: Even though Britain's lore allows for many Dark-types, I don't think we will see much tbh. Probably a Dark E4, but we already have Hydreigon here, so not a lot of Pokémon can surpass it.
3. *Dragon: Obviously we are going to see a few Dragons here, but if we don't see Dragon/Bug here it would be such a waste.
4. *Electric: Industrial theme gives me some hope for more Electric-types, but past examples show such optimism to be fallacious. 
5. *Fairy: Oh yeah, Celtic themes pretty much confirm tons of Fairies, new and old.
6. *Fighting: Yeah... no. Yes, Britain has a long history with combat sports, but the regional map does not show much reason for optimism. If we got more cities then I would consider it, but as things stand, no.
7. *Fire: Same as Electric. I don't know if we can be more hopeful because of the steampunk theme, especially since this region seems to be a Cold Region™ like Sinnoh.
8. *Flying: I have no idea? We already have Fletchling, Rufflet and Hoothoot for the regional dex. Unless hey make something interesting I don't really care.
9. *Ghost: Same as Dark-types. I think people might feel spoiled after Alola, but they really shouldn't.
10. *Grass: Yeah, there will be a lot of these.
11. *Ground: We already have the Diglett mural so we might see a bunch of new Ground-types after two very limited generations.
12. *Ice: Post-game defensive Ice-types seem to be confirmed yet again. I wish we could get early route Ice-types but GF seems committed to this metaphorical horse.
13. *Normal: Industrial theme makes me interested in the possibilities. Overall pastal regions also suggest a similar thing to Kalos, ie. generic early route Pokémon will have Normal subtyping to fill the dex.
14. *Poison: Oh yeah, we are going to see a lot of these. I mean, the region is literally called disease. Britain has a lot of amphibians, poisonous plants and industrial garbage.
15. *Psychic: There doesn't seem to be a designated biome for Psychics besides walled ruins so eh...
16. *Rock: Same as Ground, but we also have tons of caves here, so we will likely see a few fossils as well.
17. *Steel: Probably the biggest thing here, we are going to see a lot of these guys here. They are popular, and they are relevant to the region.
18. *Water: Sure, this region does not have water routes, but it is still surrounded by water and ports... so....7.8/10

Notes on confirmed species:

Galar Regional Dex so far

New Pokémon, Confirmed:

1. Grookey
2. Grass Starter 2
3. Grass Start 3
4. Scorbunny
5. Fire Starter 2
6. Fire Starter 3
7. Sobble
8. Water Starter 2
9. Water Starter 3
10. Wooloo
11. Wooloo Evo 2
12. Gossifleur
13. Eldegoss
14. Dreadnaw (Gigantamax Dreadnaw)
15. Corviknight(Gigantamax Dreadnaw)
16. Yamper
17. Yamper Evo 2
18. Impidimp
19. Impidimp Evo 2
20. Alcremie (Gigantamax Alcremie)
21. Morpeko (Hangry Form Morpeko)
22. Obstagoon
23. Sirfetch'd
24. Rolycoly
25. Rolycoly evo 1
26. Cramorant
27. Polteageist
28. Duraludon pre-evo 1
29. Duraludon pre-evo 2
30. Duraludon
31. Zacian
32. Zamazenta

New Pokémon, Unconfirmed:

1. Generic rodent 1
2. Generic rodent 2
3. Generic Bug 1
4. Generic Bug 2
5. Generic Bug 3
6. Generic Bird 1
7. Generic Bird 2
8. Generic Bird 3
9. Generic Fossil I-I
10. Generic Fossil I-II
11. Generic Fossil II-I
12. Generic Fossil II-II
13. Generic Fish
14. Generic Version Counterpart I
15. Generic Version Counterpart II
16. Generic Fire I
17. Generic Fire II
18. Generic Fighting I
19. Generic Fighting II
20. Generic Ice I
21. Generic Ice II
22. Generic Psychic I
23. Generic Psychic II
24. Generic Ghost I
25. Generic Ghost II
26. Generic Genderless
27. Generic Poison I
28. Generic Poison II
29. Generic Steel I
30. Generic Steel II
31. Generic Rock I
32. Generic Rock II
33. Generic Water I
34. Generic Water II
35. Generic Pseudo I
36. Generic Pseudo II
37. Generic Pseudo III
38. Legendary III
39. Mythical I
40. Mythical II
41. Mythical III*

*Might appear for DPPt remakes, instead.

[spoiler]So far we have:

1. Minccino
2. (Cinccino)
3. (Pichu)
4. Pikachu
5. (Raichu)
6. Wishiwashi
7. Hoothoot
8. (Noctowl)
9. (Deino)
10. Zweilous
11. (Hydreigon)
12. Grubbin
13. Charjabug
14. Vikavolt
15. (Riolu)
16. Lucario
17. Trapinch
18. (Vibrava)
19. Flygon
20. (Larvitar)
21. (Pupitar)
22. Tyranitar
23. Munchlax
24. Snorlax
25. (Rufflet)
26. Braviary
27. (Espurr)
28. Meowstic
29. Wailmer
30. (Wailord)
31. Diglett
32. Dugtrio
33. Bounsweet
34. Steenee
35. (Tsareena)
36. (Rhyhorn)
37. Rhydon
38. Rhyperior
39. Hippopotas
40. (Hippowdon)
41. Snover
42. Abomasnow
43. Sawk
44. Wynaut
45. Wobbuffet
46. Stufful
47. Bewear
48. Frillish
49. (Jellicent)
50. (Golett)
51. Golurk
52. Gastly
53. Haunter
54. Gengar
55. Duskull
56. (Dusclops)
57. Dusknoir
58. Tympole
59. (Palpitoad)
60. Seismitoad
61. (Bergmite)
62. Avalugg
63. (Feebas)
64. Milotic
65. Hawlucha
66. Mantyke
67. Mantine
68. Vulpix (Regular Form)
69. Ninetales (Regular Form)
70. Wooper
71. Quagsire
72. (Charmander)
73. (Charmeleon)
74. Charizard
75. Budew
76. (Roselia)
77. (Roserade)
78. Pancham
79. Pangoro
80. Growlithe
81. Arcanine
82. Inkay
83. (Malamar)
84. Axew
85. (Fraxure)
86. (Haxorus)
87. (Onix)
88. Steelix
89. (Sneasel)
90. Weavile
91. (Cleffa)
92. (Clefairy)
93. Clefable
94. (Chinchou)
95. Lanturn
96. Bronzor
97. Bronzong
98. Combee
99. Vespiquen
100. (Caterpie)
101. Metapod
102. Butterfree
103. Eevee
104. Sylveon
105. Leafeon
106. Glaceon
107. Umbreon
108. Espeon
109. Jolteon
110. Vaporeon
111. Flareon
112. Ralts
113. (Kirlia)
114. Gallade
115. Gardevoir
116. Electrike
117. Manectric
118. Bunnelby
119. Diggersby
120. Wingull
121. (Pelipper)
122. (Joltik)
123. Galvantula
124. Machop
125. Machoke
126. Machamp
127. Goldeen
128. Seaking
129. (Lotad)
130. (Lombre)
131. Ludicolo
132. Deino
133. (Zweilous)
134. Hydreigon
135. Togepi
136. (Togetic)
137. Togekiss
138. Noibat
139. (Noivern)
140. Goomy
141. (Sliggoo)
142. Goodra
143. Mimikyu
144. Jangmo-o
145. Hakamo-o
146. Kommo-o
147. (Tyrogue)
148. (Hitmonlee)
149. (Hitmonchan)
150. Hitmontop
151. Pumpkaboo
152. (Gourgeist)
153. Maractus
154. Lapras
155. Snorunt
156. Glalie
157. Froslass
158. Mawile
159. Ferroseed
160. Ferrothorn
161. Mareanie
162. Toxapex
163. (Purrloin)
164. Liepard
165. Croagunk
166. (Toxicroak)
167. (Solosis)
168. Duosion
169. (Reuniclus)
170. (Shellos (East Sea))
171. Gastrodon (East Sea)
172. Rotom (Wash) (Normal)
173. (Axew)
174. (Fraxure)
175. Haxorus
176. (Timburr)
177. Gurdurr
178. Conkeldurr
179. (Wimpod)
180. Golisopod
181. Cottonee
182. Whimsicott
183. Qwilfish
184. Roggenrola
185. Boldore
186. Gigalith
187. (Baltoy)
188. Claydol
189. Ditto
190. Litwick
191. Lampent
192. Chandelure
193. (Bonsly)
194. Sudowoodo
195. Vanillite
196. (Vanillish)
197. Vanilluxe
198. Togedemaru
199. Swirlix
200. Slurpuff
201. Cherubi
202. (Cherrim)
203. Sigilyph
204. Pidove
205. (Tranquill)
206. (Unfezant)
207. Frillish
208. (Jellicent)
209. (Karrablast)
210. Escavalier
211. Farfetch'd
212. Sableye
213. (Honedge)
214. Doublade
215. Aegislash
216. (Cutiefly)
217. Ribombee
218. Throh
219. Morelull
220. Shiinotic
221. Phantump
222. Trevenant
223. Turtonator
224. Gothita
225. (Gothorita)
226. (Gothitelle)
227. Drampa
228. (Vullaby)
229. Mandibuzz
230. Meowth
231. (Persian)
232. Oddish
233. Gloom
234. Vileplume
235. (Bellossom)
236. (Natu)
237. Xatu
238. Munna
239. (Musharna)
240. Seedot
241. (Nuzleaf)
242. (Shiftry)
243. (Helioptile)
244. Heliolisk
245. Shuckle
246. (Pawniard)
247. Bisharp
248. (Remoraid)
249. Octillery
250. Torkoal
251. (Skorupi)
252. Drapion
253. Scraggy
254. (Scrafty)
255. (Klink)
256. (Klang)
257. Klinklang
258. (Dewpider)
259. Araquanid

Confirmed Galarian Forms:

1. Zigzagoon
2. Linoone
3. (Koffing)
4. Weezing
5. Ponyta
6. (Rapidash)

Confirmed Mythicals:

1. Mew

Confirmed by Japanese website's image:

1. (Goomy)
   [*](Sliggoo)
   [*]Goodra
2. Eevee
   [*](Flareon)
   [*](Vaporeon)
   [*](Jolteon)
   [*](Espeon)
   [*](Umbreon)
   [*](Glaceon)
   [*](Leafeon)
   [*](Sylveon)
3. Mimikyu
4. (Ralts)
   [*](Kirlia)
   [*]Gardevoir
   [*](Gallade)
5. Trubbish
6. (Garbodor)
7. Vanillite
   [*](Vanillish)
   [*](Vanilluxe)

Pokémon in items:

1. Fletchling
2. (Fletchinder)
3. (Talonflame)
4. (Remoraid)
   [*]Octillery
5. (Diglett)
6. Dugtrio (from regional map)

There's a few that I missed but I'll put them soon.[/spoiler]

Edit(27.02.2019): Put the list under spoilers, it will grow. This is for the very first trailer.

Edit 2(28.02.2019): Unconfirmed Counterpart addendum:

[spoiler=""]

Permanent counterparts:

1. Vullaby
   [*]Mandibuzz(Gender counterparts of Rufflet-line)
2. Throh (Version counterpart to Sawk)
3. Weedle
4. Kakuna
5. Beedrill(Former version counterparts to Butterfree in Gen 5)
6. Bulbasaur
7. Ivysaur
8. Venusaur(Starter counterpart to Charizard)
9. Squirtle
10. Wartortle
11. Blastoise(Starter counterpart to Charizard)
12. Shelmet
13. Accelgor (Trade counterpart to Karrablast-line)

Version counterparts:

1. Bagon
2. Shelgon
3. Salamence (Former version counterparts of Larvitar-line in D/P).
4. Aron
5. Lairon
6. Aggron (Former version counterparts of Larvitar-line in X/Y).
7. Trubbish
8. Garbodor (Former version counterparts of Minccino-line in B2/W2).
9. Baltoy
   [*]Claydol (Version counterpart to Golurk in US/UM)
10. Sableye (Version counterpart to Mawile in R/S/OR/AS)
11. Petilil (Version counterpart to Cottonee in B/W/B2/W2)
12. Lilligant (Version counterpart to Whimsicott in B/W/B2/W2)
13. Mime Jr. (Version counterpart to Bonsly in D/P/B2/W2)
14. Mr. Mime (Version counterpart to Sudowoodo in D/P/B2/W2)
15. Bellsprout
16. Victreebel (Version counterparts to Oddish-line)
17. Weepinbell
18. Spritzee
19. Aromatisse (Version counterparts to Swirlix-line)
20. Mankey
21. Primeape (Version counterparts to Meowth-line)
22. Drampa (Version counterpart to Turtonator)

[/spoiler]

Edit(05.06.2019): Revealed Pokémon from the trailer are: Steenee, Rhydon, Hippopotas, Snover, Sawk, Wobbuffet, Bewear, Stufful, Bounsweet, Frillish, Mudsdale, Golurk, Gastly, Duskull, Seismitoad, Avalugg, Milotic, Hawlucha, Mantine, Raichu, Vulpix(in the stadium's lounge) and Charizard. Rest of the direct footage shows Budew, Wynaut, Pancham, Gigalith, Growlithe, Inkay, Axew, Snorlax, Steelix, Weavile, Quagsire, Clefable, Male Meowstic, Dugtrio and Wailmer Pail. Official website's pictures confirm Diglett, Mantyke, Pangoro, Bronzor and Lanturn. Japanese website also confirms Combee. Japanese website's image showcases Goodra, Eevee, Mimikyu, Gardevoir, Trubbish, Vanillite, and Hoothoot.

Edit(07.06.2019):Octillery is shown on a building in the direct. Butterfree was also shown, but I forgot to list it.

Edit(08.06.2019): Updated counterparts.

Edit(11.06.2019): Direct showcased Wingull. Treehouse play showcased Bunnelby, Diggersby, Wingull, Metapod, Haunter, Galvantula, Machop, Machoke, Goldeen, Ludicolo, Eevee, Arcanine, Togekiss. Official English website confirms Hydreigon, Electrike, Ralts, Vespiquen and Mew.

Edit(15.06.2019): Official Chinese website showcases Noibat in the overworld in a picture.

Edit(08.07.2019): Official website confirms Jangmo-o and reconfirms Goomy. Trailer showcases Mimikyu. Japanese trailer showcases Pumpkaboo, Hakamo-o, Maractus and Hitmontop.

Edit(12.07.2019): New Japanese trailer showcases Abomasnow, Gengar, Lapras, Glalie, Ferrothorn, Toxapex and Mawile.

Edit(07.08.2019): New trailer showcases Galarian Zigzagoon, Linoone and Weezing, and Duosion. Japanese trailer also showcases Mareanie, Croagunk and Liepard.

Edit(16.08.2019): New trailer showcases Rotom Wash, Rhyperior, East Sea Gastrodon, Kommo-o, Haxorus, Conkeldurr and Machamp. Japanese trailer also showcases Golisopod and Whimsicott. English website confirms Qwilfish.

Edit(05.09.2019): New trailer showcases Vileplume, Eeveelutions and Sudowoodo. Japanese trailer showcases Claydol, Eeveelutions, Ninetales, Manectric, Boldore, Trapinch, Ditto, Togedemaru, Normal Rotom, Bronzong, Lampent, Dusknoir, Vanilluxe, Swirlix, Cherubi. Official website showcases Seaking against Cramorant. Direct footage showcases Gurdurr, Sigilyph, Litwick, Pidove, Frillish (both forms).

Edit (18.09.2019): Japanese website showcases Escavalier, and reveals Sirfetch'd, Regional Evolution of Farfetch'd. Japanese trailer showcases Gallade.

Edit (20.09.2019): Dynamax Camera website showcases Sableye, Aegislash and Ribombee.

Edit (01.10.2019): Game Informer interview confirms Throh.

Edit (05.10.2019): Live stream showcased Morelull, Shiinotic, Phantump, Cottonee and Galarian Ponyta.

Edit (14.10.2019): Download cartridges showcase Gothita and Turtonator.

Edit (15.10.2019): Download cartridges showcase Drampa and Mandibuzz.

Edit (16.10.2019): Trailer showcases Gigantamax Meowth. Official website showcases Gloom.

Edit (24.10.2019): Commercial shows Oddish, Xatu, Munna, Gardevoir, Goodra, Seedot, Chandelure, Heliolisk, Trevenant, Pyukumuku, Charjabug, Vikavolt, Shuckle, Bisharp, Octillery, Togepi, Torkoal, Slurpuff, Tympole, Wooper, Drapion, Scraggy.

Edit (08.11.2019): TV commercial showcases Klinklang.

Edit (11.11.2019): Final PV showcases Roggenrola, Doublade, Araquanid.