Checklist for all typings

As always, typings =/= type combinations, numbers and unique typings are not mentioned, there is no special distinction for forms, evolutions or pre-evolutions etc. This is just a checklist for stuff that exists and doesn't exist yet.
Fairy:

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

Covered: 3/18

Normal:

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

Covered: 10/18

Fire:

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

Covered: 13/18

Bug:

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

Covered: 14/18

Poison:

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

Covered: 11/18

Flying:

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

Covered: 4/18

Fighting:

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

Covered: 8/18

Ground:

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

Covered: 10/18

Ice:

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

Covered: 10/18

Steel:

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

Covered: 9/18

Electric:

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

Covered: 14/18

Dragon:

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

Covered: 9/18

Rock:

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

Covered: 16/18

Grass:

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

Covered: 12/18

Water:

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

Covered: 16/18

Dark:

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

Covered: 12/18

Ghost:

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

Covered: 8/18

Psychic:

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

Covered: 11/18

Edit: Added Ultra Necrozma's Psychic/Dragon.

Edit (27.11.2019): Added Sword & Shield additions.
Edit (10.01.2020): Added Urshiful Rapid-Style Strike's Fighting/Water.
Edit (28.02.2020): Added Zarude's Dark/Grass.
Edit (20.06.2020): Added Galarian Slowbro's Poison/Psychic.

Edit (25.10.2021): Added Hisuian Zorua/Zoroark's Normal/Ghost.