There is no "banned list", at least not one that's publicly accessible. Trolls are banned quietly and without fanfare, so there's probably a 99% chance that I never even encountered you, let alone noticed you. There are over 69,000 Doper user names registered, and we don't have access to the member list. So, really it's not worth the effort. (My guess of "The Grapist" was based on your use of purple text.)
Here's the thing. If you'd tell me what your user name there was, I could actually search for you and see if you were banned because of "intolerances" or whether your behavior really was trollish. If you don't want to tell me, that's fine, but it doesn't precisely strengthen your case.