Not sure if I agree. Calling Manny Manny and Floyd Floyd is truly special. Calling Canelo Saul would just be awkward.
It's true, especially when you consider the origin of that and how that nickname came to be. He took something that made him different, being red haired and turned it into something cool sounding and a household name. Many people make fun of those who have red hair but Canelo turned all that around.