I'll add another recommendation for either Kid Cat or Genji.
I'd also like to suggest a villager that isn't listed yet: Stinky. I've had him in my town for ages, and he's really neat if you like a sort of pro-wrestling-oriented jock. His house isn't bad - very unified theme, and I find him pretty cute. Liking him is pretty subjective, but i just wanted to give him a shout-out.
I loved Samson, for a simple mouse he got a lot of emotes and was really nice to have around. Genji was nice, but I would have liked him more if had he been a Cranky villager. I have Snake now and I like him a lot, he is very cute and that voice just feels better coming from a small animal. That said I had Pierce move in for a few months and he was fun too.
i know a lot of people aren't mentioning him, but rudy!! he was one of my starting villagers and is an absolute cutie if you want to talk to him, feel free to vm me when you're online and you can come over and talk to him!
i had teddy for the longest time and loved him, his house is so cute and goes well in any town. i just got hamlet and he's such a cutie as well lol. another one i really like is rudy but i've never had him