It's not the specific name of the GT that go them Banned but what was being done with them. I know I saw the "Predator" GT Perma-Banned along with his other Profiles from the Account Suspension Forums for Sales of Service.
In short, MS begin resetting or "clearing up" "OG" GamerTags for people to use again that had no activity on them. So the first thing a few people did was take all of these now available GT's and make Silver Profiles with them. They then sold them to other
Players for cash and or MS Points.