Greta Thunberg, according to Thiel (seriously).

I personally think that when he mentioned her name during that interview, it was intended to be used as an archetypal proxy in place of someone else (another public figure) that he had personal dealings with. Yudkowsky checks those same boxes (mission focused on specific existential risk, gets a cult following) for example.

That being said, I don’t care much for Christian prophecies. Better to talk why than who.