Bart Ehrman describes his beliefs.
Bart Ehrman, "On Being an Agnostic Atheist," on ehrmanblog.org, accessed July 17, 2023
So I’m an agnostic atheist. Or an atheistic agnostic. Take your pick! I don’t know if there’s one (or very, very many) greater, superhuman intelligence in the multiverse; but I really, really doubt it and simply don’t believe it.
For what it’s worth, I sometimes call myself a “Christian atheist.” That’s because I try to implement what I see to be the best moral teachings of the Christian religion in my life. But usually, I just call myself that to myself and to close friends, since most people get confused enough when I say that I’m an agnostic atheist, and throwing “Christian” in there does not do much to unmuddy the waters…