Wolf and deer villagers are my favorite! I also really like the cat and sheep villagers and I wouldn’t mind having an island filled with only these types - as long as they’re not all the same personality anyway.
That's a tough one... I guess the species I like the most villagers from is the dogs: I like so many of them like Walker, Cherry, Benjamin, Daisy, Lucky, Mac. Rabbits as well with Cole, Carmen, Coco, Snake, O'Hare. I like too many variety of villagers though so I don't think I could ever devote my town to only one species.
Deer, cats, dogs, rabbits, and wolves! I'd say octopi too, since there are none I dislike, but since there are only 3 of them it feels a little like cheating,,
cats, and the "unique" within their species villagers. Drago is considered an alligator by the game, but is clearly a dragon. Same with Julian as a Unicorn, or Phoebe as a Phoenix. Another is Tucker, who is based on Wolly Mammoths and is the only elephant with tusks. Outliers like that I really like, and I'm just generally a cat person.
Of course the wolves, bear cubs,and deers
In my island:
Wolves =3 (Audie,Fang&Whitney)
Deers=0 (Recently in my island are Diana,Fauna,and Fuchsia)
Bear Cub=1 (Judy)