Although I think Bret Stiles is the mastermind behind the whole red john thing, I believe RAY HAFFNER is doing the dirty work for him. They do have the connection with Ray being a member of visualize. Ray fits all of "Red John's" characteristics and is very capable of pulling off all the murders. Stiles is probably the smartest out of all the suspects and the only one smart enough to outsmart Jane. He is quite similar to Jane. It seems like Stiles is also fond of Jane sort of like Red John. Jane once said that Stiles "wouldn't hurt a fly" which is why he probably had someone like Ray do everything for him. Heck maybe Ray is Stiles son. Stiles has all of Red John's mental characteristics (including brainwashing people) and Ray has all the physical characteristics of Red John. I also think Ray likes Lisbon, which is why he didn't hurt her. Those feelings might become a problem later on between Stiles and Ray. 

Bob Kirkland is dead at the hands of Reede Smith. This list is becoming 
interesting. Since there is a "powerful" organization within the CBI, 
FBI, girl scouts of America and the Justice League, I think we need to 
organize the list into two groupings.Powerful Organization
1. Rede Smith
2. Sheriff McCallister
3. Gale BertramVisualize
1. Brett Stiles
2. Ray HaffnerSo
for the first four episode, we have seen which suspect of the list is 
associated too. From episodes 3 and 4, there we establish Kirkland 
stumbled upon a powerful organization, talks to Smith and gets shot. In 
episode 3 Smith is seen talking with Bertram and McCallister.It 
is established from what we have learned from episode 2 that Haffner is 
alined with Visualize as he is tasked with looking out with their best
interests gathered from his conversation with Lisbon.So here is 
the enigma, we know from the Red Barn that more than likely that red 
John is or was associated with Visualize. We have established that Brett
Stiles knows more about Red John than Patrick when we see them sitting 
on the park bench while Jane is there getting the location of Frye. 
However, given the events of episode 4 it begs to question is Red John 
in the Powerful Organization or more closely associated with Visualize?If
we take what Sophie Miller had stated in her notes, Red John is in good
health and middle age. This would potentially eliminate Stiles and 
Smith thus reducing the list down to three people. In looking at who 
would be the best fit, I would say it would have to come down to between
Bertram and Haffner just because both are associated with power and 
greater access. That is not to say that McCallister could have a means 
to position and access, but in looking at his status as a sheriff, I 
would think not.Besides I think this plot vise with the Powerful
organization, it would make since for Heller to save McCallister and 
Smith for this vise post Red John arc.The tiger tiger reference
is quite interesting because of the fact this is a password within this
organization. this phrase has also been associated with Red John as 
well. This would make one think that Red John is at the head of that 
organization and that would make the most since. Thus putting Bertram in
the prime stop light. However, like any organization, it takes great 
money and resources to pull this off. Thus Bertram would have to balance
the books and keep it on the down low. Hence this would bring Haffner 
back into the mix as he might have a great cash flow from Visualize.In
conclusion, I think Heller is setting up the post Red John arc with 
this organization. Patrick may catch the whale, but may realize that the
whale is apart of a pod as he has not demonstrated the knowledge of 
this organization, only Red John.

Regarding those who wonder why Robert Kirkland killed the RJ accomplice without asking who RJ really was?

I think possibly Micheal Kirkland who killed him not Bob.

As an organization, i think all of them has already had a role as red john in some point. That explains the different descriptions about him. But again as an organization, there must be a leader, someone with power and capacity to convince people to make such things for him, even sacrifice. And i lke Stiles for this. And as you can see, so far in season 6, there's almost no focus on him, just like Heller does with the guilty ones.

For all of you thinking Red John is not on the list,I am not sure but I think I heard Patrick saying to Kirkland last night that he havent´t told to a living soul who suspects are...just mentioning it,although I think Red John is on the list,otherwise the list with 7 names would have no sense...we already know the fake list was planted for someone who had intentions to steal information from Jane and that someone turned out  to be Kirkland so the list is probably real(there is no reason for 2 lists to be fake).

What I am hoping is going to be revealed is how Red John predicted the 7 names on the list,we already found out how he knew about the "happy memory" and there were some theories even before the start of the sixth season that it was somehow connected to Sophie Miller and it turned out to be true(I read about it on the mentalist board on Imdb and maybe it was mentioned here also,I don´t know).

As far as we know,Jane shortened his list to 7 names by predicting who could physicaly be at all those places where and when murders happened...my guess is that all the suspects from the list except Stiles are somehow connected to the Tyger Tyger organisation and they were at some point at Red John murder sightings doing some cover up and cleaning mess,that would explain how Red John would know the names because those are the people he sent there. It could be I am wrong but I haven´t come up with a better theory so far. What do you think how did Red John know who will be on Patrick´s list?

The first thing; there is no Red John.
Red John is not a person, Red john is a sect. So that jane is wasting his own time.
But Jane has to find The Creator(Leader).
Suspect list is getting decreasing... Obviously I am pretty sure that Creator is Bred Stiles.
Stiles is leader but He has never killed someone we know.
Remember from S6E4 Bob Kirkland said "my brother has quited to using alcohol suddenly"
Leaving to using alcohol is very hard to do everyone knows :) But Bred stiles can hypnotize him easly.
(Forgive me İf I made a english grammer mistake)

My theory:

Red John is not a member of the secret tyger tyger society, but knows about it and possibly started it. Therefore they are afraid he will be caught because it will bring out their secrets. Partridge was a member of the tyger tyger society, and so are all the other suspects on the list, except Kirkland obviously, and Stiles (because he is not law enforcement). RJ murdered Partridge as a warning to the others, so they won't give him up.

Also it makes sense that a weak person like Michael Kirkland would fall in the hands of Stiles through Visualise.