Guess the champ by weight class & professional career duration

I had a whale of a time finding three champions specifically who shared this fact in their bio (several boxers; these might be the only three champs)

 

World title gold, not Olympic.

 

WOW, what a coincidence, no, not the one I was thinking of...but what are the odds of multiple flyweight titlists having the precise same career length in years, months and days?!

I'm pretty sure Brown doesn't share the facet that ties the four names in question together...but can't actually seem to verify that he doesn't from readily available sources, so can't say 100% sure (that would be just way too eerie a coincidence if he did?

 

Jake is the MW, yes!

From there you have an important piece of the puzzle, as far as figuring out the other two champs (and one contender of unspecified weight class).

 

You're just missing the flyweight!

 

Correct!

Which, remember, is also shared by somebody often called (including by a very famous publication) the best to never get a world title shot...