I use the slsk interface. It’s fine popping a few songs at once.

I generally hate Ai but I used it to tidy the old lists I had and present in the organisation level I wanted (albums etc) I then found a script, that when ran finds and DLs those playlists. It gets it about 95% right.

For navidrome it’s not great with the info pulled from music beats etc. I was trying to do it manual then I found a tool that lets me match an album to the music. It’s created for missing data/covers.