Except for traditional Folk from various European locations. I think this still counts as "Western Music", even if it isn't that popular.

If you consider the Western World to be purely Northern America, then I think you're right, since Native American tribes are normally not considered Western.

Imo, the best music comes from a mix of various cultures, I'm a huge fan of Folk Rock/Metal. (Rock and thus Metal obviously coming from Blues).

In Germany, we differentiate E- and U-Musik. E (Ernst) means "serious" and is classical music and stuff. U (Unterhaltung) = entertainment and is everything African American inspired (Jazz, Rock, Pop, hip hop, ...). This difference basically exists to devalue everything that isn't central European in origin