There’s a lot more than one “American Cheddar”, it’s a big damn country with several distinct dairy regions. (Wisconsin, California, New York, and Vermont being significant but not exhaustive) And the cheese culture is just a fork of the various European colonizers/immigrants that brought cattle over, combining old techniques with new resources.
Cream cheese, Humboldt Fog, and Cougar Gold are some highlights of American-developed-and-produced cheeses.
This isn’t about what’s available in Europe (also, hyperbole makes a terrible argument. I can just point to something like Reykhólar) You’re specifically complaining about cheese availability in the United States and I think you’re way more invested in hating the country than actually trying to fix your problems.