Between the Dragon Ball Z anime, the manga, guidebooks and the movies, there are only a handful of recorded Power Levels in the Dragon Ball franchise.
Vegeta doesn't have as many transformations as Goku, but that's simply because the Prince of All Saiyans doesn't need them.
Dragon Ball Daima revealed that Vegeta had indeed also unlock the Super Saiyan 3 form rather than seemingly skipping over it as teased by the future events seen in Dragon Ball Super, and this form ...
Ultra Ego is Vegeta's most powerful form, but there are quite a few characters who are even stronger than him!
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Anime death match: Vegeta vs Chainsaw Man

CBR’s latest Anime Death Match sees Chainsaw Man facing Vegeta in a duel between two of shonen’s most brutal and merciless dark heroes.
So far in Dragon Ball Daima, we’ve seen both Goku and Vegeta transform into Super Saiyan levels one and two, with the Saiyan Prince revealing his Super Saiyan 3 transformation for the first time.