>kanto
the magikarp you can buy ahead of mt. moon
>johto
first mareep i find outside of violet city
>hoenn
the game doesn't officially start until i catch a duskull
>sinnoh
filler until i catch a buneary
>unova
sewaddle (the real grass starter) is available pretty early
>kalos
pancham
>alola
just island scan something, idk
>galar
no substitute can save that disaster of a kusoge