Firstly, while there may indeed be some Christians who believe that non-believers (in God, presumably, although that isn't clear from your post) will suffer eternal damnation that is very far from being the mainstream belief, which is that anyone who leads, by their lights, a good life and refrains from doing what they consider wrong makes it into Heaven, or at least into Limbo, which is defined as a place of purely natural happiness, as opposed to the supernatural spiritual happiness of communion with God.
Secondly, not only Jesus saves. Few Christians would believe that devout Moslems, for example, would suffer eternal damnation.
Thirdly, I suppose there are christian creationists, but I would bet they would be outnumbered by the christian evolutionists. As far as the catholic church is concerned the present Pope declared in (I think) 1996 that evolution was perfectly compatible with christianity.