Here you will find a list of all Animated universes that Marvel has produced over the decades. Please note there won’t be too much detail as you may want to watch the series yourself.
Spider-man and His Amazing Friends (1981)
90’s Cartoon universe
Series included: X-Men, Iron Man, Fantastic Four, Spider-Man, The Incredible Hulk, Silver Surfer
(Note: Even though it was part of the 90’s timeline, it is considered a separate universe).
Series included: Ultimate Spider-Man, Marvel’s Avengers Assemble, Hulk and the Agents of S.M.A.S.H., Marvel’s Hulk: Where Monsters Dwell
Disney Series 2
Series included: Marvel’s Guardians of the Galaxy (animated series), Marvel’s Spider-Man, Avengers: Black Panther’s Quest
(Note: Even though the Black Panther Quest is considered the fifth series of Avengers Assemble, the series and GOTG would cross over with Marvel’s Spider-man, the successor series of Ultimate Spider-man, that was set in an alternate universe. Thus making all three show being part of a separate universe to the previous Disney Shows.)
Series included: Spider-man: Into the Spider-verse, Spider-Man: Across the Spider-verse, Spider-man: Beyond The Spider-verse
Disney + What If…? Series
Note: While this is part of the MCU with some of the characters appearing in Live-Action, it is still considered a separate part of it with many episodes taking place in an alternate universe. IE Captain Carter from MOM is not the same one from this show. In many ways all of these are alternate universes but for simplicity’s sake, they will all appear here.