Standard/regional:

eevee: pidgey (regional) -> pidgeotto (regional) -> pidgeot (regional): rattata -> raticate: starly (regional) -> staravia (regional) -> staraptor (regional): lillipup -> herdier -> stoutland: pidove (regional) -> tranquill (regional) -> unfezant (regional): smoliv -> dolliv -> arboliva: lickitung -> lickilicky: cleffa (regional) -> clefairy (regional) -> clefable (regional): igglybuff -> jigglypuff -> wigglytuff: aipom -> ambipom: buneary (regional) -> lopunny (regional): togepi -> togetic -> togekiss: whismur -> loudred -> exploud: doduo (regional) -> dodrio (regional): slakoth (regional) -> vigoroth (regional) -> slaking (regional): porygon -> porygon_2 -> porygon_z: happiny -> chansey -> blissey:

Add picks:

Uncommon: sandshrew -> sandslash: diglett -> dugtrio: krabby -> kingler: hoothoot -> noctowl: skitty -> delcatty: bidoof -> bibarel: glameow -> purugly: hisui_zorua (regional) -> hisui_zoroark (regional): minccino -> cinccino: wooloo -> dubwool: lechonk -> oinkologne_male:

Rare: meowth -> persian: alolan_meowth (regional) -> alolan_persian (regional): goldeen -> seaking: sentret -> furret: patrat -> watchog: deerling_spring -> sawsbuck_spring: deerling_summer -> sawsbuck_summer: deerling_autumn -> sawsbuck_autumn: deerling_winter -> sawsbuck_winter: bunnelby -> diggersby:

Epic: girafarig -> farigiraf: munchlax -> snorlax: hippopotas -> hippodown: helioptile -> heliolisk: stufful -> bewear:

Uniques:

farfetch_d:

kangaskhan:

tauros:

dunsparce -> dudunsparce:

smeargle:

miltank:

spinda:

zangoose:

pachirisu:

audino:

furfrou:

drampa:

indeedee_male:

indeedee_female:

tandemaus -> maushold_three -> maushold_four:

cyclizar:

Legendaries:

regigigas:

meloetta:

pirouette_meloetta:

type_null: