Yay an outdated question! Time to update it for gen 9! (Going from weakest to strongest)
Name (form) - BST
Wishiwashi (solo form) - 175
Blipbug - 180
Sunkern - 180
Snom - 185
Azurill - 190
Kricketot - 194
Wurmple - 195
Weedle - 195
Caterpie - 195
Ralts - 198
Scatterbug
Cosmog - 200
Feebas - 200
Magikarp - 200
Cascoon - 205
Silcoon- 205
Pichu - 205
Metapod - 205
Kakuna - 205
Nymble - 210
Tarountula - 210
Bounsweet - 210
Tyrouge - 210
Wooper (Paldean) - 210
Wooper - 210
Igglybuff - 210
Spewpa - 213
Sentret - 215
Cleffa - 218
Happiny - 220
Seedot - 220
Lotad - 220
Poocheyna - 220
Burmy (all forms) - 224
Wimpod - 230
Shedinja - 236
Bunnelby - 237
Makuhita - 237
Pawmi - 240
Rolycoly - 240
Whismur - 240
Zigzagoon (both forms) - 240
Toxel - 242
Combee - 244
Wiglett - 245
Nicket - 245
Rookidee - 245
Noibat - 245
Starly - 245
Togepi - 245
Zubat - 245
Gossifleur - 250
Fomantis - 250
Bidoof - 250
Smeargle - 250
Swinub - 250
Slugma - 250
Hoppip - 250
Marril - 250
Spinarak - 250
Pidgey - 251
Yungoos - 253
Rattata (Both forms) - 253
Lechonk - 254
Flittle - 255
Charcadet - 255
Patrat - 255
Smoliv - 260
Applin - 260
Venipede - 260
Wynaut - 260
Skitty - 260
Hoothoot - 262
Spearow - 262
Shinx - 263
Pidove - 264
Impadimp - 265
Hattena - 265
Pikipek - 265
Ledyba - 265
Digglet (both forms) - 265
Nincada - 266
Dewpider - 269
Surskit - 269
Rellor - 270
Dreepy - 270
Milcery - 270
Yamper - 270
Wooloo - 270
Wingull - 270
Tailow - 270
Jigglypuff - 270
Tadbulb - 272
Nidoran♂ - 273
Bramblin - 275
Skwovet - 275
Litwick - 275
Nidoran♀ - 275
Tynamo - 275
Lilipup - 275
Cherubi - 275
Fletchling - 278
Kirlia - 278
Wattrel - 280
Nacli - 280
Arrokuda - 280
Rockruff - 280
Petilil - 280
Cottonee - 280
Rogenrolla - 280
Bedew - 280
Meditite - 280
Slakoth- 280
Mareep - 280
Purrloin - 281
Chewtle - 284
Morelull - 285
Riolu - 285
Chingling - 285
Paras - 285
Inkay - 288
Barboach - 288
Ditto - 288
Ekans - 288
Helioptile - 289
Greaveyard - 290
Shroodle - 290
Steenee - 290
Solosis - 290
Gothita - 290
Bonsly - 290
Spheal - 290
Trapinch - 290
Pinco - 290
Meowth (all forms) - 290
Sandile - 292
Munna - 292
Foongus - 294
Tympole - 294
Blitzle - 295
Duskull - 295
Shuppet - 295
Electrike - 295
Shroomish - 295
Horsea - 295
Tinkatink - 297
Vulpix (kanto) - 299
Vulpix (Alolan) - 299
And those are all the Pokémon with a BST under 300! Enjoy your massive list of weak Pokémon!
Source!
HOPE I HELPED :D
