I once actually had a delicious Philly cheese steak specialty pie in NJ that had American cheese on it (in addition to thin sliced steak, fried onions and peppers) on it. Granted, peppers have no place on a traditional Philly cheese steak, but American cheese has no place on a traditional pizza, so I wasn’t going to be a stickler about it. That place also has excellent regular pizza, and a decent cheesesteak. It was Joe’s Pizza in Hillsborough, NJ, if anyone is interested, though there better pizza to be found in that town. Victor’s, Angelo’s, and DeLuca’s were my favorite places there, though there are probably a couple dozen options in that one town, almost all of them, excepting dominos, were better than anything you can find in Colorado (or even Philadelphia, which has otherwise really good Italian food). As far as Michigan, Detroit style is decent, and I would rather eat Jet’s or Buddy’s than any of the imitations of NY style pizza you find outside of NY/NJ/CT, but it doesn’t compare to a pie from the tristate.