Going to throw a wrench into this, ready? Japan.
The thing about Italian and Mexican food is that if you throw it in a blender, it all tastes the same. The pasta is a different shape and sometimes the cheese is inside or outside, but the same basic flavor is there. Same for Mexican food.
Japanese food has to have the most variety of flavors and textures. And any so-called Japanese food you get outside Japan is
nothing like the real thing. Really! Japanese are obsessed about food and contrary to what you may think, they eat
FRICKIN' HUGE amounts of food.
Japanese always seem to adopt the
best of other ethnic food, also. The attention to detail is downright pedantic. They'll spend years in another country trying to find the 'best of the best' of another cuisine before they cook it up in Japan. They import only the best ingredients and spices.
I just can't possible put into words the level of obsession. You wouldn't believe me anyway.

The only food lacking now is US beef. Since the import ban, all we have is Australian beef, which I don't think comes close to the flavor and tenderness of US beef.