I would say GameCube Animal Crossing is more "earthy" than eerie, which is what I loved about it. The way everything felt muddy and like an actual forest was pretty cool, like it was an actual community of animals.
That said, I think New Horizons' aesthetic is just as good. New Leaf disappointed me a bit because it felt washed out and a bit too clean, but New Horizons is leaning far into the colors and honestly looks like it will nail the feeling of being on an island in an archipelago. Just the way those rocks jut out from the sides and the general sense of adventure you'll have getting from place to place, until it's "civilized" by pavements and bridges, will be a fun development to see.
I also won't really mind the lack of mean villagers considering they've upped their liveliness in other ways, like giving them way more world interactions. Seeing the jock villagers doing morning aerobics on the beach is amazing, and I assume the other personality types will have similar quirks.