First stage Pokémon according to their BST

Dual stage bases:
395:

1. Porygon

365:

1. Magby

360:

1. Elekid

345:

1. Rhyhorn

330:

1. Aron

325:

1. Magnemite
2. Honedge

320:

1. Oddish
2. Axew
3. Rowlet
4. Popplio
5. Litten

318:

1. Bulbasaur
2. Chikorita
3. Turtwig

314:

1. Squirtle
2. Totodile
3. Piplup
4. Froakie

313:

1. Chespin

310:

1. Abra
2. Gastly
3. Treecko
4. Torchic
5. Mudkip
6. Sewaddle

309:

1. Charmander
2. Cyndaquil
3. Chimchar

308:

1. Snivy
2. Oshawott
3. Tepig

307:

1. Fennekin

305:

1. Machop
2. Timburr
3. Vanillite

303:

1. Flabébé

300:

1. Poliwag
2. Bellsprout
3. Geodude
4. Alolan Geodude
5. Dratini
6. Larvitar
7. Bagon
8. Beldum
9. Gible
10. Klink
11. Deino
12. Goomy
13. Grubbin
14. Jangmo-o

295:

1. Horsea
2. Duskull

294:

1. Tympole

292:

1. Sandile

290:

1. Trapinch
2. Spheal
3. Gothita
4. Solosis

280:

1. Mareep
2. Slakoth
3. Budew
4. Roggenrola

275:

1. Nidoran Male
2. Lillipup
3. Litwick
4. Tynamo

265:

1. Pikipek

264:

1. Pidove

263:

1. Shinx

260:

1. Venipede

251:

1. Pidgey

250:

1. Hoppip
2. Swinub

245:

1. Zubat
2. Togepi
3. Starly

240:

1. Whismur

220:

1. Lotad
2. Seedot
3. Happiny

218:

1. Cleffa

210:

1. Igglybuff
2. Bunsweet

205:

1. Pichu

200:

1. Scatterbug
2. Cosmog

198:

1. Ralts

195:

1. Caterpie
2. Weedle
3. Wurmple

190:

1. Azurill

Single stage bases:

534:

1. Type: Null

500:

1. Scyther

435:

1. Tangela
2. Misdreavus

430:

1. Gligar
2. Sneasel

410:

1. Ponyta

405:

1. Murkrow

401:

1. Archen

400:

1. Wailmer

390:

1. Yanma
2. Munchlax

385:

1. Mudbray
2. Onix
3. Lickitung

375:

1. Nosepass

370:

1. Vullaby

369:

1. Litleo

362:

1. Tyrunt
2. Amaura

360:

1. Aipom
2. Larvesta

355:

1. Kabuto
2. Omanyte
3. Anorith
4. Lileep
5. Tirtouga
6. Espurr

350:

1. Growlithe
2. Cranidos
3. Shieldon
4. Buneary
5. Mienfoo
6. Rufflet
7. Skiddo

348:

1. Drifloon
2. Pancham
3. Scraggy

345:

1. Clamperl
2. Mantyke

341:

1. Swirlix
2. Spritzee

340:

1. Koffing
2. Staryu
3. Pawniard
4. Stufful

338:

1. Crabrawler

335:

1. Tentacool
2. Cacnea
3. Deerling
4. Frillish
5. Elgyem
6. Pumpkaboo

334:

1. Snover

330:

1. Voltorb
2. Chinchou
3. Teddiursa
4. Houndour
5. Phanpy
6. Spoink
7. Buizel
8. Hippopotas
9. Finneon
10. Zorua
11. Clauncher

329:

1. Stunky
2. Trubbish

328:

1. Drowzee
2. Drilbur

325:

1. Seel
2. Grimer
3. Alolan Grimer
4. Krabby
5. Exeggcute
6. Eevee
7. Shellos
8. Dwebble

323:

1. Woobat

320:

1. Psyduck
2. Cubone
3. Goldeen
4. Natu
5. Skrelp
6. Salandit
7. Sandygast

319:

1. Joltik

316:

1. Pansage
2. Panpour
3. Pansear

315:

1. Slowpoke
2. Darumaka
3. Karrablast

310:

1. Doduo
2. Swablu
3. Glameow
4. Mime Jr.

309:

1. Phantump

308:

1. Corphish

306:

1. Binacle

305:

1. Venonat
2. Mankey
3. Shellder
4. Smoochum
5. Carvanha
6. Numel
7. Ducklett
8. Ferroseed
9. Cubchoo
10. Shelmet
11. Mareanie

304:

1. Bergmite
2. Cutiefly

303:

1. Yamask
2. Golett

302:

1. Gulpin

300:

1. Sandshrew
2. Alolan Sandshrew
3. Snubbull
4. Remoraid
5. Baltoy
6. Snorunt
7. Bronzor
8. Croagunk
9. Minccino

299:

1. Vulpix
2. Alolan Vulpix

295:

1. Shroomish
2. Electrike
3. Shuppet
4. Blitzle

294:

1. Foongus

292:

1. Munna

290:

1. Meowth
2. Alolan Meowth
3. Pineco
4. Bonsly

289:

1. Helioptile

288:

1. Ekans
2. Barboach
3. Inkay

285:

1. Paras
2. Riolu
3. Chingling
4. Morelull

281:

1. Purrloin

280:

1. Meditite
2. Cottonee
3. Petilil
4. Rockruff

275:

1. Cherubi

273:

1. Nidoran Male

270:

1. Taillow
2. Wingull

269:

1. Nincada
2. Dewpider

266:

1. Nincada

265:

1. Diglett
2. Alolan Diglett
3. Ledyba

262:

1. Spearow
2. Hoothoot

260:

1. Skitty
2. Wynaut

253:

1. Rattata
2. Alolan Rattata
3. Yungoos

250:

1. Spinarak
2. Slugma
3. Bidoof
4. Fomantis

245:

1. Noibat

244:

1. Combee

240:

1. Zigzagoon

237:

1. Makuhita
2. Bunnelby

236:

1. Shedinja

230:

1. Wimpod

224:

1. Burmy

220:

1. Poochyena

215:

1. Sentret

210:

1. Wooper
2. Tyrogue

200:

1. Magikarp
2. Feebas

194:

1. Kricketot

180:

1. Sunkern