From the pre-modern era where 3pt shooting wasn’t as emphasized as it is today, I think the names are Ray Allen, Vince Carter, Kobe, Tmac, Jrich, Shawn Marion, and Baron Davis. And if we relax the “dunk contest” criteria, I’d throw Manu Ginobili in there too.
If they played the game the way it is today, I think those guys would’ve been pretty prolific 3pt shooters since they likely would’ve trained different and had different shots available to them.