Like most people I'm thinking that the list we saw isn't the real list at all, I know Heller said that Patrick's list is legit but he didn't say that that list was Patrick's list did he?

I'm thinking that that room and everything about it was a decoy, I reckon that Red John has had hidden cameras in that room for a very long time and Patrick subtly noticed them and started misdirecting Red John with his 'investigation'.
Almost every season 5 episode we're reminded that Patrick has a perfect memory so why would he need to write the names down at all if not for someone else's benefit?

As for who I think it is, my strongest suspicion is Patrick's father (I'm not sure why Patrick made his list based on people he met after his wife and daughter's deaths), but I don't think it is too farfetched to think that maybe he had plastic surgery and is now masquerading as someone Patrick knows, probably Kirkland considering his deep knowledge of Patrick.