There's still a ton of value in the historical recommendations on last.fm's site. What its future looks like, I'm not sure. I'd love to know who is going to operate it now that it is independent.

I'd recommend ListenBrainz for folks interested in similar tracking and some recommendations with clearer ownership.

For my own historical interests, I have a Navidrome plugin writing to my own API and surface charts across time periods by querying the postgres database it writes to.