My favorite client on android is symfonium. Also has support for more sources:
Local
Plex
Emby
Jellyfin
(Open) Subsonic
AudioBookShelf (Experimentell)
Kodi (19+)
OneDrive
box
Box
Google Drive
Dropbox
pCloud
WebDAV
SMB/SAMBA
Strictly Jellyfin:
Had good experiences with Finamp before switching to Symfonium.
Metadata (Jellyfin):
ID3 Tags
Musicbrainz (1st party plugin. Manual 1-click install)
(optional) Apple Music as a plugin
Maintenance/Import:
Done via lidarr
Effort:
Besides having to create album entries on Musicbrainz (can be done automatically with the webtool 'Harmony'), waiting 7 days to get them auto-approved and then importing it on lidarr?
Very low.
Recommendation:
Jellyfin + Lidarr
If you like tracking data:
You can track your listening history on listenbrainz (part of and operated by musicbrainz) and generate pretty graphs and get listening recommendation made from users with a similar taste.
Disclaimer: I havent tried subsonic or anything else than Jellyfin. So I can't speak pro/cons