Uchis I like include:
Pashmina - Goat
Muffy - Sheep
Cherry - Dog
Deirdre - Deer
Fuchsia - Deer
Phoebe - Ostrich
Reneigh - Horse
Renee - Rhino
Tammy - Cub
I would put their pictures but those are a lot lol
I've got Phoebe. Same as you, I really don't like most of the uchi designs.. and I think they can come off as really aggressive since they shout a lot. But Phoebe is cute, and the dialogue seems to fit her really well
I actually think that there are some very nice designs for the sisterlies.
My absolute favorite would be Cherry, she is pretty and also very lovely to interact with.
Agnes is very pretty, but for some reason I didn't reallly click with her.
My starter was Hazel and though not my favorite, she is definitely cute.
Others I like but don't have any personal experience with would be Muffy, Fuchsia and Flo. Pashmina is pretty, too.
I personally like Muffy, though I didn't really anticipate to like her. She was my starter uchi villager, and I wasn't the biggest fan of the gothic design at first, but I eventually warmed up to it. Then I finally realized that I think her character is a play on being the black sheep, so I ended up liking her a lot because of that.