Between the Dragon Ball Z anime, the manga, guidebooks and the movies, there are only a handful of recorded Power Levels in ...
The final fight with Kid Buu in Dragon Ball Z tries to act like SSJ3 Goku is stronger than Ultimate Gohan, but this is very much not the case.
Goku's had a lot of different forms from the original series, to DBZ, Dragon Ball GT, Dragon Ball Super, and most recently Dragon Ball DAIMA.
As of the Tournament of Power, there are now 15 Dragon Ball Super characters who can turn Super Saiyan – some stronger than others, of course.