Applin > Flapple (use Tart Apple)
Applin >Appletun (use Sweet Apple)
Clobbopus > Grapploct (level up knowing Taunt)
Sinistea > Polteagiest (use Cracked Pot or Chipped Pot depending on form)
G. Linoone > Obstagoon (lvl 35 during night)
G. Farfetchd > Sirfetched (get 3 crits in one battle)
G. Yamask > Runregius (take 49 damage or more, then walk under a stone arch in the wild area)
Milcrey > Alcremie (hold a sweet item and spin)
Snom > Frosmoth (happiness at night)
I think that's all the meme methods