I did email about this, but no sign of a list of what I've been trying to find out. Yes, it is good that they record items that haven't been given an airing before. They also seem to do transcriptions for works to other instrumentations, etc.
Overall, though many recordings seem to be compiled by a process of bringing together what various people have decided to work on and perform recently. Hence CDs that mix a diversity of choral/instrumental/etc works and artists on one disc.
Useful for completists who already have a full collection, and for musicians and musicologists as a sort of journal to publish items. But makes choosing individual CDs more difficult for someone like myself. e.g. I'm far more interested in orchestral/instumental works than choral/song. And prefer works as composed by RVW to ones that have been transcribed for some other set of instruments, say.
Combine that with giving such collections 'names' that may not convey the details, and it makes things a bit difficult to acces by a newcomer. I love VW's music but I'm not a musician or a musicologist.
IIUC you can download files. I much prefer having CDs, but if I can find a suitable list (again!) I might give that a try as a way to select the types of works I prefer.