Any examples of othrodow fighters who beat are converted.

Danny Garcia is left handed.

Trinidad and Ward are natural left handers. Winky Wright was a natural right hander who fought southpaw. There are lots more and I'll name them if I remember them. Any time a fighter hits harder with their lead hand than with their back hand they are probably converted. I suspect Frazier was left handed. Sonny Liston was left handed.

You mean converted lefties...Andre Ward

From what I could make out from that awfully worded title, you're asking which orthodox fighters have been converted? De La Hoya and Cotto would not be examples of those. They were left handed but converted into orthodox fighters.