Standard/regional:

oddish -> gloom -> vileplume: bellsprout -> weepinbell -> victreebel: weedle -> kakuna -> beedrill: zubat -> golbat -> crobat: nidoranf (regional) -> nidorina (regional) -> nidoqueen (regional): nidoranm -> nidorino -> nidoking: spinarak -> ariados: varoom (regional) -> revavroom (regional): bulbasaur -> ivysaur -> venusaur: toxel (regional) -> toxtricity (regional): budew -> roselia -> roserade: gastly -> haunter -> gengar: venipede -> whirlipede -> scolipede:

Add picks:

Uncommon: ekans -> arbok: venonat -> venomoth: tentacool -> tentacruel: galarian_slowpoke (regional) -> galarian_slowbro (regional) -> galarian_slowking (regional): grimer -> muk: alolan_grimer (regional) -> alolan_muk (regional): koffing -> weezing -> galarian_weezing (regional): skrelp -> dragalge:

Rare: paras -> parasect: paldea_wooper (regional) -> clodsire (regional): croagunk -> toxicroak: salandit -> salazzle: glimmet -> glimmora:

Epic: gligar -> gliscor: hisui_sneasel (regional) -> sneasler (regional): gulpin -> swalot: stunky -> skuntank: skorupi -> drapion: trubbish -> garbodor:

Uniques:

qwilfish:

hisuian_qwilfish (regional) -> overqwil (regional):

seviper:

pyukumuku:

poipole -> naganadel:

Legendaries:

nihilego:

naganadel:

eternatus:

okidogi:

munkidori:

fezandipiti:

pecharunt: