Hopefully a free foss alternative to spotify will be viable soon, and allow to easily transfer playlists. But for now, Spotify Discover Weekly is my best way to discover new music. It's an algorithm generated playlist based on artists I follow and tracks I've favorited / added to custom playlists recently.

Here's the latest I found from it: Submotion Orchestra https://www.youtube.com/@Motivation https://www.youtube.com/watch?v=wzNQDu1HsAs