Anime transformations as we know them wouldn't exist without Dragon Ball Z, and these are the absolute strongest forms in DBZ.

Ultra Ego Vegeta may be stronger than Ultra Instinct Goku (for now), but he's hardly the strongest character in Dragon Ball ...

Vegeta doesn't have as many transformations as Goku, but that's simply because the Prince of All Saiyans doesn't need them.

Akira Toriyama understood his characters better than anyone else, and the Dragon Ball manga's paneling and storytelling is frankly on another level.