BoxRec

Georges Carpentier is the most well known http://boxrec.com/en/boxer/10604

Len Harvey http://boxrec.com/en/boxer/17630
Alabama Kid http://boxrec.com/en/boxer/12452

Willie Meehan may have http://boxrec.com/en/boxer/10585
Any others?

Also which one was the best of the bunch?

I don't think it's a feather in anybody's cap unless they won titles in all those weight classes...

The human body can have spurts of growth that widely differ from person to person... Some boxers start pro as young as 15 and keep fighting until they're close to 40 or more... They can put on 70 pounds or more with late growth spurts helping.