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Synthwave sent me down the path of Vaporwave > Chillwave > Darkwave. There’s a not-unrelated genre called Mallsoft. Somehow that got me into Library Music. I found a lot of music on Bandcamp and archive.org. You can get downloads of full albums and discographies for a few dollars, name your price, or for free.
If you’re looking to do a deeper dive, the genre and sub genres are largely credited with being kicked off by Macintosh Plus - Floral Shoppe in 2011.
I listen to this stuff all day long while I’m working at home. My vaporware playlist is literally 7 days long (2350 songs). Here’s some of my picks.
https://interloperecords.bandcamp.com/album/--7
https://9rhythm9.bandcamp.com/album/kmart
https://dreytnien.bandcamp.com/album/silicon-reality
https://obliqueoccasions.bandcamp.com/album/v1
https://obliqueoccasions.bandcamp.com/album/remnants
https://catsystemcorp.bandcamp.com/album/palm-mall
https://catsystemcorp.bandcamp.com/album/sunday-television-2
More Links
https://archive.org/search?query=synthwave
https://archive.org/search?query=vaporwave
https://archive.org/search?query=mallsoft
At first glance, I feel like your in parentheses statements maybe should not be left beneath the surface.