Came across this in-development app, that seems really clean. Is available for iOS/MacOS already. It will be available on PlayStore and Fdroid eventually, but there is an APK for those who want to try it out.
Github Project: https://github.com/avdept/JellyBoxPlayer
Screenshots
How would this handle audiobooks? I’ve not made the move to Jellyfin yet, as Plex handles all my multimedia needs for now, but I’ve been keeping an eye on Jellyfin’s development with interest.
Not exactly what you’re asking, but I can recommend Audiobookshelf.
As someone who’s tried both Plex and Jellyfin, my suggestion is dont use either. ABS (audiobookshelf) spins up in minutes and is far superior