Depends on your definition of diverse, I suppose. Pizza, burgers, nachos and fries aren't my definition of diverse; they are standard fast foods. Be our Guest is a little unique, but BOG is reservation only.
I agree HS needs more diversity, but it now is at least as diverse as MK.
Catalina Eddies is listed as an "American" Menu (WDW website), but offers only pizza and Caesar salad.
ABC Commissary offers: burgers, ribs, fried seafood, a "Mediterranean" salad (pepperoncini, Kalamata olives, feta, hummus).
Backlot Express offers: a Cuban sandwich, a "Southwest" salad, and a plant-based "Tatoonine Two Suns Hummus" dish (hummus, plant "meat", cucumber, sesame, Za'atar)
Docking Bay 7 has: ribs, pot roast, fried chicken, a shrimp/noodle salad, Kefta, Pasta w/plant based "meat" tomato meat sauce, and a chicken salad with quinoa/pumpkin seeds/green curry.
Ronto Roasters offers turkey jerky, a roasted pork/sausage/slaw wrap, a chicken/cucumber/yogurt/feta pesto wrap, and a turkey jerky/plantain/pork rinds/rice cracker/blue potato chip sampler.
Woody's has a BBQ brisket/cheddar sandwich and tomato basil soup
HS also has the new blue and green milk stand.