So let's talk a lil about the multiverses of causal reality!!
Some of you believe because of the branching timelines, every possible reality exists parallel to this one, even fictional ones. I'm sure that you have already heard this argument before but: fictional universes like that of DC or other fictional realities operate on different fundamentals of physics and reality then this reality does, the infinite branching timelines only create every possible reality built off of this reality's fundamentals of cosmic physics
• • • HOWEVER • • •
Branching timelines is not the only aspect of the anatomy of our multiverses!
A lot of you only think in branching timelines, very local, all of those branching timelines- every possible causal reality that ever existed in our multiuniverse, all exists within a "bubble", Just one of many "bubbles" 'floating' amongst infinite other bubbles. each bubble contains its own 'multiverse' subject to its own structures of reality and causal rules. These bubbles each may preexist the "big bang" mabey not ever having one, or mabey each bubble exists as a consequence of alternative bigbangs(?). The causal rules and structures of these other bubbles could be completely alien to anything that humankind would even be capable of thinking of. some of them would be a bit more familiar having similar causal rules and physics with some fundamental differences. With rules and physics that seem magical, or non sensical, and the infinite possible time-lines, there could/would be a real version of whatever fictional universe you can imagine, with some differences in at least one of the various bubbles.
I believe that interbubbular travelers, and I think even perhaps the entities known as "the muses", help connect and share stories between bubbles, to new multiverses, that culminate in the minds of artists, serving as the divine inspiration(?). Lives, deaths, empires and worlds born anew as a story told in a completely foreign world, told a little differently under the lens of their reality.
I believe some entities that travel across these places or exist above or between them, like some spirits, some gods, Eldritch beings, or mabey even the fates move or reincarnate souls across different bubbles to hone the soul, teaching specific lessons or causing certain spiritual development, or the need of the magic of the other worlds in this one, which may be where some of you were from!
And those are just the causal realities, all causal realities primordially arose from khaos/ noncausal realities, and there are plenty of places that blur the lines between the casual and noncausal realms, like the Eldritch realms:) some of the Eldritch/Faerie realms exist connected to our world(s) but also separate from it, existing in a less causal layer:)