I don't think that many hacks are as story-driven as you mention, most of the ones I've seen are pretty platforming-focused. But admittedly I don't play that many.
But yeah, I can't think of many standard hack streamers, not any really other than Amethyst (I think BeeKaay
also streams his moderations? But he hasn't in a bit). I'd say try browsing the Super Mario World section on Twitch and see if you find anything?