Corviknight has a pre evolution that is a baby bird in a steel plate egg.

There's a creepy looking Eyeball pokemon that has spider legs and cries out of its one eye.

Galarian Luxray is like a hairless cat and is constantly vibrating. I think it's Ice type.

There are a lot of Galarian forms of old starters. Tepig gets very bloated and can float as a Flying type. Popplio has clown makeup on. Turtwig looks like a sea turtle.

Primeape evolves into a real looking monkey with a head that looks like Mankey. It has a belt and chains around its body and is Fighting/Ghost. I think it's a reference to Jacob Marley.

There is a Pokemon that's just a pickle with arms and legs.

There's a mimic Pokemon that looks like either Oran or Pecha berries.

There's a post game storyline involving helping Lillie learn how to become a pokemon master.

There's a dice block Pokemon that evolves into a waifu slot machine that looks busty and in a bunny suit(?)

Gigantamax Venusaur and Blastoise are a thing. Also Sirfetch'd gets one with an even bigger leek. Wailord gets one where it has a bunch of moons revolving around it.