I know it isn't one of the options but imagine how thematic it'd be if we chose The Undertaker. Like officially he never existed, there's no footage or media of him anywhere and as the years go on less and less people remember him until only the oldest generation are ranting about some kind of deadman horror creature that used to dominate WrestleMania.
I don't really wanna answer the question in earnest because they're all very good at what they do and have each left their marks on the industry. Boring answer but picking one is both difficult and feels mean.
"I still have a tattoo to get, that says I'm living in the moment."