Hello everyone! I'm Nathan10828 (but you can call me Nathan) and I'm a new fan who is interested in the MCU because I have a few questions before I really can get started and maybe even be part of this fandom! I may have already been seen under another minor publication a few months ago but anyway. I'm also a fan of Tom Holland's Spider-Man movies, being so far the only movies I've seen along with Avengers: Endgame and Civil War!!
My main question about the MCU is why the movies are divided into sagas/phases and how are they divided (for example, why Spider-Man: No Way Home is not part of the Infinity Saga instead of the Multiverse saga; I don't expect an answer to this rhetorical question that serves as an example). How do they determine them? Do they take inspiration from specific comics for each of these movies (or even the separation into sagas and phases)? And what exactly do these phases represent? I would appreciate an answer please, thank you very much!!