Personally, mine is joint first between Sandshrew (the cutest), Espurr (most relatable), and Gastrodon.
After those, in no particular order, I like Turtwig (best starter, fight me), the Roggenrola line (little rock guys), the Litwick line (candles and lamps with nefarious intentions), and Metagross (cool robot thing).
Kyogre is the best legendary in my opinion
Haunter is my original favorite but of all the Pokemon I’ve seen it’s gotta be a toss up between Lampent, Sinistea, and gimmighoul.
If you can’t tell, ghost type is my thing.
Ghost types are quite neat. I have found that the majority of my favourites turn out to be rock, ground, and steel types. I like big rocky and metal things!
My personal favourite ghost-type line has to be Litwick -> Chandelure.
Nice to see some Haunter love. Such a cool design.