You see all those styles in the amateurs as it is; although at the top level you're much more likely to see guys who tend more towards boxing than slugging because power means nothing in the amateurs.
Basically, what are good boxers that are right handed? Lennox Lewis, Tommy Hearns, Alexis Arguello are ones that come to mind.
:think 70% of boxers are right hand or fight in a orthy stance. if you were southpaw it's far harder to find great or textbook southpaw fighters.
i dont mean who fights right i mean who fights out of a classical gaurd that amateurs use. not peekaboo or philly crab shell etc.
Lennox Lewis, Tommy Hearns, Alexis Arguello. See if you can find video of Danny Jacobs as an amateur.