This is a fun tool, but it's also pretty revealing of the arbitrariness with which "genre" is labeled. Though I get that there is frequent innovation in electronic music, I would argue the same is true of all music, yet electronic music is the most likely to see that innovation as a "new genre."

Searching this page for "jazz" I find results that don't really capture the space, and instead go deep into interesting but likely unrepresentative niches ("icelandic jazz") that musicologists probably wouldn't consider genres/subgenres. There's also things that clearly aren't genres but are just keywords people like using ("jazz organ", "jazz clarinet").

Overall, again this is a fun music discovery tool, but if you want to learn about music genres I'd suggest reading about music history. This doesn't just mean old/classical music (though it is influential), there's lots of fascinating books about modern music as well.