mangachu was doing meme spoon shit way back in the day i feel like before dd5f, also known for hiding in corners/wacky plays (Pete known for corners too lol sneaky pete)
ima give it up to indust for being the first med to be widely known for having sick mechanics, seeing him play def inspired me and im sure plenty of other ppl to actually practice mge and jump maps/surfs and shit to get better at med
not really influential cuz nobody else does it but u could say that sigh running shotgun pocket in current era is 'pioneering' to some extent just in that its totally different from what everyone else does
feel like the real test is empirically how often people mention their names, like when people say things like a "banny scout", "sandblast uber", "ma3la bomb" (metalworks), "lolguy milk", "that was some clockwork shit", etc. it at least means they have a well known / distinct playstyle, or some really important clutch plays that everyone remembers (e.g., harbleu snakewater clutch)