Spotify's (non-algorithmic) New Music Friday, (algorithmic) Release Radar and Discover Weekly playlists have all been amazing for finding music for me.
I had found their best offerings to be their end of year wrap-ups: “The Ones that Got Away” in 2017 and “Tastebreakers” in 2018, and was disappointed they chose to end 2019 with “Music of the decade”, which was all songs I already knew.