Since I'm not seeing anybody mention it yet but it's one of my favorite ways to find new genres, I'd highly recommend everyone check out everynoise.com because they seem to have scraped Spotify's genres (you'll need Spotify to listen to more than 30 second samples, but probably still useful even if you don't use Spotify). The number of genres they have listed in the THOUSANDS, and I guarantee they will have something you've never heard of, but it's a great rabbit hole to go down when looking for new music. If you like a genre, they'll already have multiple playlists for it, and if you like a particular artist, they'll have those too. I am not affiliated with the website, but try to turn everyone I know onto it because there's just so much out there to discover that I wouldn't have otherwise.

(everynoise.com developer, if you're reading this, I love you <3)