Basically that God exists because it's the best explanation for what we have, but not necessarily as a personal God of certain religions, and things like divine revelation aren't necessary to believe that one exists.I'll look into deism further. A quick google search didn't really click with me though.
I mentioned it before, but I feel like from a rational perspective, if there is a "creator" and everything that exists does so because of someone or something's will, than Deism probably has the best explanation conceptually for what that would be like.