i would say knowledge over civilization, Yahweh/Jehovah would probably base himself entirely in Celestia and probably all angels could claim service to him and some middle eastern gods (where the idea of angels comes from). Jesus is like Heracles a child of the diety but also at the same time is god in human form so some sort of Exarch/Avatar hybrid probably alot of paladin and priest spells, heal wounds, revive, miracle, banish, detect evil, purify food and water. I dont know about the holy spirit since that's essentially the will of Yahweh. this would also bring in new hierarchy of angels unlike the ones on Celestial, you would have to have the Metatron, the 4 great angels (Micheal, Gabriel, Uriel, Raphael) and other important angels, sandalaphon,Raguel Kaliel etc as well as new angel types based on the hierarchy
and maybe include the human hybrid Nephelim
and maybe the 4 horsemen and other stuff.
also irony DnD already acknowleged Lucifer and Satan, Lucifer being a ruler of the 9 hells who disappeared for some reason whether Asmodeus usurped him or he just left, know one knows.