I have often wondered how many versions of Pepe there are. They may be uncountable, he's international.I actually believe they WILL be in museums and people will write scholarly articles about the influence of this figure. It's crazy, in a way, but in another way makes perfect sense. Since he's a meme, you could just search "Pepe Memes" if you haven't already, and you should get a ton of them. Happy hunting!