(I’m using the Apple TV, connecting to a local server via SMB, and using local metadata only, in case the behavior I’m seeing is a bug specific to one or more of those factors.)
I think that TV episodes should never sort by title: they have an explicit order. (Maybe title would be useful in the case of a tie, but never as the primary sort key.)
I can’t get both my movies and my TV episodes sorting as desired. If I set Settings > General > Sort Order to “Filename”, my TV episodes sort correctly but movies get sorted incorrectly: “The Blues Brothers” shows up under “T”, etc. If I set it to “Title” my TV episodes are unusable.
(If I’m overlooking a real use case where TV episodes should be sorted by title, I would request a separate setting for the sort order for TV episodes.)