I've never seen a complete list of which existing shorts still have their music/fX soundtracks existing as well. Those interest me the most, as does the late Pathe era since few of those have been available. On a similar note, what ever happened to THE MISCHIF MAKERS episodes?
ParamountGlobal owns CBS, and CBS lays claim to all the Benny TV shows pre-1955, or something like that. After that it's Universal (MCA) and Jack's Estate.
How are the elements across the board for the available MGM era silents - the 1927-1929s? The shorts released with synchronized music and sound effects interest me greatly... that transition period.