Forgettable Pokémon

Pikachu or Charizard. They really need some more attention, poor things are constantly ignored by Game Freak in favour of :

Bruxish, who got like 10 forms already and has more than one game named after it, is in every game and is Ash's most well-known Pokémon, plus it has who knows how many plushies and is seen as a second logo. Also a lot of episodes only focused on it and quite a few short animations about it.

Minior who has two megas, a Gigantamax form, the first seven star tera raid, and is one of Ash's most notable Pokémon who everyone loves, not to mention appearing on box art for the best selling Pokémon games.

I have the weird ability to remember every Pokemon. I think it's because I read the Pokemon Deluxe Handbook every day during the Pandemic. God help me.