For my likings;
(aside from the ones already mentioned)

The often forgotten "Chocolatito" Gonzalez has to be in the top spots.
"Chemito" Moreno
"Titere" Vasquez
If Rios beats Antillon I'd add him to this list.

Honor mentions to the Kameda Bros, Mikey Garcia, Jorge Linares, Antonio DeMarco, Kell Brook and Nathan Cleverly.