Phil's one of my favorite villagers since he's pretty. He seems weirdly effeminate, with his sparkly eyes and head mask. Finally, while he can remind people of Falco, he's based on the green pheasant (which Falco is also based on), which is his namesake. He's the flirty type, a smug villager, so he does these nice little sparkly dances that fit well with his appearance. I got his portrait and he visits my house often.
I also like Sparro a lot. He's a jock villager but he never really gets on my nerds. I like how he looks a lot, since he's based off a eurasian tree sparrow, which is very similar to the house sparrow (which I initially thought he was based on). I got him through igloo after I beat him at charades, simulating chopping onions, and after that, well, he's been a great villager to me. Sparro also visits my house a lot too.
There's also Pierce, who I also convinced to stay in after camping in an Igloo. He's very similar to Sparro in terms of personality, but he looks pretty, and I generally like the look of eagle villagers.
While I do like Blathers a lot as a special character, I think Gulliver's another favorite too. He's a nice gull character, which there's not a lot of in media! But he also makes a lot of references to other Nintendo games, and I'm sure he somehow visited the Paper Mario universe since he knows who Bobbery is, and he also paid a visit to Isle Delfino, which I sincerely hope didn't get arrested for vandalism (even though gulls are stereotypically great at that!

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And there's another special character: Beppe, a crow/raven-like bird who's at the camper customization store. Hoping we'll see him in the new Animal Crossing game for next year.
And there's a lot of characters I'd like to have over such as Twiggy, who's based off a budgerigar; Jacques who I think is a jackdaw; Aurora, who looks like an emperor penguin chick; Hopper, who looks like a rock-hopper penguin; Jay, who's based on the barn swallow; but there's only so much space I can have in a village, so, yeah.