We can safely say that the list is down to 2 people.
Here's how:
Brett Partridge- dead
Reede Smith- not red john, as we saw in 6x04..he kills but not with RJ's MO.
Gale Bertram- Unlikely. He seems to be part of the tyger tyger group, but unlikely that he is RJ. He is definitely lower in grade than Smith. We can understand that from the way Smith talks to him "Its your job to know the answer." and bertram responds sincerely "i'm doing my best" as if he is being ordered by someone higher up.
Bret Stiles- Not likely to be red john. Because when RJ goes to see sophie miller, he needs to have anonymity. Nobody should be able to recognise him. And stiles is kinda Famous. And like jane said, RJ might have wanted to meet sophie himself. So somebody else didnt go. The one who went was RJ himself.
Ray Haffner- Possible, since we still dont know much about him.
Sheriff McAllister- Possible. He whistles, he's afraid of pigeons, he's not afraid of heights. He's been there since the beginning. We dont know much else.
Now here's the interesting part:
Bob Kirkland- There's a reason jane puts him on the list. He is actually putting Michael kirkland on the list, not Bob. He just doesnt know it. Now we can say jane is clever enough to know that Michael exists and is alive, it can justify most of the stuff that bob did. Because it was michael who actually did all the stuff jane found suspicious.
But we can rule out Michael as RJ because Bob said when michael was drunk n troubled, he found someone who put him straight and who asked only for devotion and sacrifice in return. That person is red john, Not Michael or Bob.
Now that we think abt it, in season 5, Michael was probably instructed by RJ to kill Jason Lennon. That is why he asked "do u recognise me?". Both the twin brothers ask that so that they know if anyone has seen the other one.
Michael is definitely alive, because he meets with bertram in season 5. (He's hiding behind the door when Lisbon is talking to bertram in his office)
So, the only remaining viable suspects are McAllister and Haffner.
Any one of them could be Red John.
Please feel free to comment or add something to my theory!