Balseraphs tend to do really good as they always do some crazy expansion at the beggining and have about 7 cities to the average of 3. Hippus because Tasunke always seem to conquer everyone with massive stacks of horsemen (and pillage me to death).
The Calabim I think are forced to beeline feudalism, which is actually a good tech path so they have a decent economy and take off later in the game. This does leave them very open to early rushes though, so they have a higher chance of getting conquered than most in the early game. Bannor I think are forced to beeline Bronze Working, so they usually have a horrible economy.
Worst thing that ever happened to me in a game was a powerful Calabim and a powerful Hippus declared on me about the same time. They both controled like 1/4 of the world each... I was the Illians in that game, lets just say that Auric never even got close to ascending.
and I almost forgot, the elves tend to do really well with their tree/cottage/mine economy. I have crazy svartalfar killing civs on the other side of the word with giant stacks of hunters in my current game.