I cleaned up a bunch of messed-up sort tags and things seem pretty close, but I found one oddity between the way the column browser sorts Album Artists and the way the Album view with sort set to "Album Artist / Album" sorts.
For example, I have albums by "Joan Jett" (sort tag "Jett, Joan") and "Joan Jett and the Blackhearts" (sort tag "Jett, Joan and the Blackhearts"). In the main view "Joan Jett" shows up
before "Joan Jett and the Blackhearts" while in the column browser "Joan Jett" shows up
after "Joan Jett and the Blackhearts". I would expect the column browser to show "Joan Jett" before "Joan Jett and the Blackhearts"
A more complex (and perhaps unsolvable) case is this: For both "Miami Sound Machine" and "Gloria Estefan and Miami Sound Machine" I have the sort tag set to "Miami Sound Machine". In the main view, the albums mix together, sorted by album, and displaying the proper album artist with each. In the column browser, it shows "Gloria Estefan and Miami Sound Machine"
after "Miami Sound Machine". I'd expect it to sort as "Gloria Estefan and Miami Sound Machine" before "Miami Sound Machine" (but I can see where this scenario is fundamentally ambiguous).
I have multiple examples of short/long album artist names reversed in the column browser. E.g., "Alan Parsons" (sort tag "Parsons, Alan") after "The Alan Parsons Project" (sort tag "Parsons, Alan Project, The") instead of before.
N.B: I also noticed that the Alan Parsons Project album "I Robot" is sorted as if the title is "1 Robot" (i.e., it appears before "Ammonia Avenue").
N.B. 2: No comments about my age based on my taste in music!