Definitely Jack.
Zipper T. Bunny is a close second. He's awful, but he's got a charm I can't put my finger on. My basement was a shrine dedicated to Zipper T. Bunny.
Well obviously now its gotta be Harvey since his lifestyle and overall vibe is just totally me! Im a hippie lmao, but before harvey came along i loved adorable Isabelle along with Digby, Kicks, Luna, All the Sable sisters, Redd, Blathers and Pascal!
Leif is just so adorable, peppy and overall happy! I also think Saharah's dialogue is hilarious at times so I always let her decorate my house, even if I never plan to keep the wallpaper (for the papering of walls) and carpet. (for the petting of cars) I also like Blathers, it's a pity that he doesn't talk as much as he used to...
Oh I like so many of them.. Isabella is definitely one of my favourites since she's so bright and cute! But I also like Jingle, because I have a bias for reindeer, haha.