Not sure if this one's been asked yet, but how about a Mount Rushmore of Gimmicks? Like, would I consider Undertaker or Kane the greatest wrestlers ever? No. Greatest gimmicks? Absolutely, although I'd lump them in as one entry because their histories are so intertwined.
Secondary question: instead of gimmicks by performer, how about gimmicks in a more general sense? Tropes that work for plenty of people throughout wrestling history – King, Charlie Brown From Outta Town, etc?
See, this is why I had banned Mount Rushmore questions from the blog for so long. Because now they won't stop.