Ok, since I started a thread on civ choice for early warmongering, I figured I'd go back to the other side of the spectrum and discuss civs from a builder perspective (which I happen to be better qualified for anyway). "Builder" style tends to be peaceful, although many builders play a hybrid style - some warmongering along with the building.
Again, I am assuming "culturally linked starting locations" is on. Obviously, this whole post carries the disclaimer: IMHO.