Red John is Wayne Rigsby

1. He got all the physique like Red John. However, during all the shows he looked like innocent and foolish.

2. Jane always teasing, make fooled of him. RJ dont like to be fooled. Lorelei said to Jane, `You shook his hand, and also you knew each other`. Lorelei dont refer to RJ. She refer to Bertram. Bertram, Smith and McAllister involved in a murder conspiracy. They killed Kirkland because Kirkland found out what they did. Kirkland search for RJ, unfortunately he identify the Tyger-Tyger organization. RJ didnt shoot his victims. He will cut the throat and the murder method will always be the same.

3. Bret and Haffner, which represents visualize just a cult. They dont killed people. Bret knew that RJ kidnapped Miss Frye because he knew who RJ is through Van Pelt. When Bret is detained in a CBI prison, he tried to lure Van Pelt to visualize and from his failures he knew someone else is toying with Van Pelt mind, it was RJ, aka Rigsby who closed to him.

4. When Frye got kidnapped, he is monitored by CBI team. Rigsby aka RJ can get access to her house.

5. Why Rigsby attracted to Van Pelt? He was just using her. One more thing because Van Pelt is red hair. In the latest season 6, the private investigator which hired by PJ thought is RJ is not RJ. It was a member of Tyger-Tyger.

6. In early season 6 where Lisbon is lured to Partridge murder scene, Brett mentioned the word Tyger-Tyger. RJ get rid off Partridge because he figured out he was one of Tyger-Tyger. RJ knew from the lists.

7. The seven list suspects which Lorelei mentioned is the Tyger-Tyger organizations and also visualize which RJ hated the most. RJ got those suspects because he kidnapped Lorelei after Jane break out her from the prison. Lorelei did not work for RJ, she is working for Tyger-Tyger. After Tyger-Tyger knew she is kidnapped by RJ, they afraid she will told RJ everything she knew about Tyger-Tyger. RJ dont have to kill her. He knew Tyger-Tyger will. In Lorelei death, there is no blood and throat cutting. Partridge did it. He is obssessed with RJ and even learned how to draw the smile. In season 1, it clearly showed that how obssessed Partridge with RJ.

8. Why RJ sparing Lisbon during Partridge death? Because PJ love and care about her. RJ is pyschopath, he killed purposely. He wants to see PJ suffer more.

This is my crazy theory.
Enjoy