Try the search function. This question pops up about once a month and there are at least two other threads that have all the possible lists.
It's never been confirmed who all 13 were but there is a few "probable" lists. Alpha Trion The Fallen Boltax The Keeper The Last Autobot Leonicus Liege Maximo Maccadam Prima Primon Sandstorm Vector Prime Vector Sigma
No, Furman created them for a Botcon fiction piece. The 13 are the Fallen and 12 others, named similarly to zodiac symbols. 1999 or 2000 botcon, iirc.
Trailbreaker Chop Shop Sky Lynx Roughstuff Stakeout G2 Highbeam Diaclone police Sunstreaker RiD Side Burn That generic robot seen in "The Search for Alpha Trion" for three seconds Cybertron Defense Red Alert Armada Cyclonus Cheetor Lo and behold... WHEELIE