I make cheesesteaks all the time (and in Philly, they're just called steak sandwiches), though I put them on a proper roll, not on King's Hawaiian bread. If I wanted sliders, I'd put them on a proper roll and then cut them to size.
Hummus instead of mayonnaise? Mayonnaise shouldn't be anywhere near a cheesesteak, traditionally, but that's ok, you're the one eating it. Hummus is right out.
Also, a "proper" cheesesteak (putting that in quotes) uses Cheez Whiz, a fake cheese sauce, though it's become commonplace for many establishments (especially those not in the Delaware Valley) to upgrade to real cheese. And, like a lot of regional specialties, there's a language to ordering one.
Cheesesteak - Wikipedia
How to order a cheesesteak in Philly like a local - Metro Philadelphia
Philly, like London, is an adopted home-away-from-home city for us. We've been there more times than I can count, and used to live just outside the Greater Philadelphia Area. As any local knows, Pat's and Geno's are for the tourists. You want to eat like a local, go to Steve's.
Now I want a cheesesteak.