The Century 21 demo discs had the track list printed on the face of the CD, with the name of the demo disc usually just being the station or package name of the first track.
I’m not aware of any list detailing the Century 21 / TM demo CDs that were produced, but I would also certainly be interested in finding one, if only to see which ones I’m missing from my collection.
I don’t think any other producer has been as meticulous as JAM in terms of an ordered list of demo CD numbers.