All of the popular emotes represent pretty common reactions, especially with respect to watching e-sports. BibleThump is a crying eyes, which is pretty much the best emote for sadness or, more commonly, faking sadness. PogChamp is a guy screaming so when people are demanding stuff (e.g. "FIX SOUND PogChamp") its an obvious choice, but it can also be used for things of excitement, so it has a lot of uses. I think, even without the FGC, the emotes that have risen to the most used would've been very similar, if not the exact same.