>>37120967-They have nothing to do with the pokemon "pantheon", they are just super powerful UltraBeast, no more no less, they are venerated as emissaries of the Sun and the Moon by alolan but that's just ignorants making shit up and overstimating how the universe actually works.
-They have no roles, they have no relation with the stars, they are just overpowered monsters with the ability to travel between parallel timelines, no more no less.
-They are Psychic type because in Pokémon that type represents the stars and cosmic power, it's perfect for them, and the Psychic also represents their power of "light" that only they and Necrozma have, this light is what deformes the reality and makes Ultrawormholes possible, also what can be crystalized into Z crystals.
-The Steel type is reference to alchemy, Solgaleo represents the lion that eats the Sun, a symbol that can represent how plants and life grow with the energy of the Sun or how the sulfuric acid (the green lion) destroys every metal but gold (the Sun), this represents gold is the purest of metals.
-The Ghost type is another reference to alchemy, since Solgaleo is the lion that represents purity and life, Lunala is the skeleton that represents rottenness and dead, thus Ghost type.