It seems like I just bought those Legacy collections.
This collections looks really nice, though. Interesting that Phantom of the Opera is included. I guess he didn't get a Legacy collection because he never had a sequel or appeared in a sequel, poor guy.
The 1944 Boris Karloff thriller "The Climax" was conceived as a sequel to "Phantom". It was to star Claude Raines, Nelson Eddy and Susanna Foster continuing their roles. However, Raines wasn't available so the characters were changed - only Foster carried over and Karloff was cast as the "villain".
If Universal was inclined to do so they could have created a Legacy set with these two films as well as the silent 1925 version of "Phantom" ...