[wave100]

This site I came across a few years ago might appeal to anyone who's prowling this comment section: https://everynoise.com/

Pretty much a scatterplot of a few thousand genres, based on some Spotify labels. The full methodology is explained at the bottom of the page.

[I-M-S]

Yes! And piggybacking this comment with https://radio.garden/ - Google maps for radio stations around the globe!