More Americans live in suburban communities and most suburbs all look the same so just throw a dart and if it’s suburb, it’s probably the poster child of America.

why everywhere in the USA is starting to look the same.

I agree with people mentioning Chicago and NYC this as they embody the spirit of America the most. But looks? Probably some average place like Richmond, Virginia or Ft. Collins, Colorado. Stereotypical being large cars everywhere, lots of roads (Texas would win here), and lots of guns. So actually I promote Dallas or Houston to the most stereotypical city.

Edit: kind of blindly chose Richmond and Ft Collins as random cities I’ve been to that feel more average. Not saying they’re bad cities, but there’s a lot of cities in every state that feel like both of these cities this making them more average.