@nibbles btw… let me pass this along in case its of help to you regarding sorting. It was something that I struggled with when I started moving my media to plex. What I do now using Musicbrainz picard is set the sorting to albumartist for both the artistsort and albumartistsort. Basically like this …
… which makes stuff like Beatles, The become The Beatles. Then plex dance the artist in plex (if they exist already) and sorting will be correct, at least as I want it 
Anyhow, your mileage may vary depending on your actual needs and desires.
