I'm confused. You said you believe Paul "preached a celestial being, not a human," but you think that his branch of Christianity completely invented the idea of a human Jesus just a few years after his death? It's not just that this theory has no evidence for it, but it seems to even contradict itself.

Anyway, we know a lot about the beliefs of various early Christian groups, and even have the writings of a number of them. But none of them match the beliefs you're positing.