Okay, so:
The only source of the games listed in this thread (Except those that already got found or whatever) all go back to sites like http://gatland.tripod.com/vgr.txtor http://dhp.com/~sloppy/classic/atari/Atari2600.rarity , which all use the same text. This text is from vgr@clark.net. I did some research and found out that VGR stands for Video Game Review (As you can find here: https://atariage.com/glossary/index.php?page=2&search=) and the person who is behind this rarity guide is called Craig Pell. Does anybody know this person whatsoever? He could help us with these abandoned games.
Thanks