While I'm usually not a big fan of bumpy terrain, and the grass is pretty annoying, my favourite tribe is Outdoor, mostly for the amazing looks though. And the music is fun too. The levels are about average, some really good, some merely ok.
Least favourite is probably beach. Don't like the color scheme, a jumbled mess of mostly primary colors, very saturated. And the levels are pretty uninspired too, comparatively, usually just brute-forcing yourself through the level. The one good thing about this tribe is the clams.
In general though, funny skills and fast forward make even bad levels mildly entertaining. And the levels still bear more a challenge than most of L1. L2 is probably my favourite game in the series, even if it has a lot of useless skills, they are fun and the tribes have nice themes and art.