Well, my game has the Shadow World, which is the shadow of the world. The Elemental Realms (Fire, Air, Water, Earth, Wood, Smoke, Cold, Magma, Mineral, Mud, Steam, Radiance, Salt), Astral Plane, and The Spirit World. Beneath the Material is the Underworld, the Land of the Dead. Most of my gods dwell on the Material plane but maintain houses in other places. For instance, Elhrim the Tree Lord dwells in all forests but also maintains a house in the Realm of Wood, the home of nature, and the God of Starvation and Death, Mote, maintains a mansion in the Realm of Famine within the Underworld.