Sleeve is my current top choice for displaying "now playing" information on my desktop, with a very customizable display, theme sharing, and last.fm scrobbling.
Side note: I found [QuietScrob](https://apps.apple.com/us/app/quietscrob-last-fm-scrobbler/id741599377) to be pretty good for scrobbling Apple Music plays on the iPhone. I recently cancelled Spotify and am trying to make my way with Music now...