I just wanted to comment about Sufism and Islam. It's a bit of a misnomer to put Sufism as being so connected to Islam. There are many Muslims who frown on Sufism. Sufism does predate Islam, especially in Persian (Iran). This list seems to put Sufism on the same level as the Kaballah (Jewish mysticism) with Judaism, which it is not. I just wanted to point that out.
Forum: "Cults," Sects, and "New Religious Movements"