Most of what you're talking about was music before 1990.I have never heard anything Korean at all. Britain is only good at making films about drug addicts. Sex pistols are the worst performers, they didn't know how to play at all.
the Beatles are melodic but sugary. Radiohead had one normal song, the rest is shit. The Cranberies are normal but they are Irish. Ska and reggae from jamaica. Britain is a barren country, a land of traders, art is not their strong point.
And I think your opinions are just a byproduct of communist propaganda.