It is hard to name. I know from the initial list, when they sent the report from Amnesty International, they had about a dozen. What they actually classify is anything that does not conform to the Communist ideology; they will be treated as such. So not only those organizations, but also Tibetans, Christians, and Catholics. They are all persecuted, but Falun Gong is the largest group being persecuted in China, using the most severe means of persecution.
On May 31st, 2006. See this statement in context.