I have a feeling that Ron is RJ. Not strong clues supporting it though. He fits to the standard characteristics of RJ, plus he can have easy acces on Jane's files (season 5 last ep.) in order to see his files and get the same suspects. The only true clue.. He appears in way too many episodes, for just a side character on the series (without even any lines. We've never heard him talking)..!!! Safest choice for me.
(Plus, because Jane made a list, it doesn't have to be correct. And it doesn't mean that Bruno Heller is not misleading us, to make a dramatic finale)




Brett Partridge is too young to be RJ.  In seas. 5 ep 15 RJ is supposed to be 21 in 1988. No way


Brett Partridge

Patrick Jane is a pretty good suspect i must confess, but highly improbable. Could be though, if he's schizofrenic. There are many good evidence supporting the theory that Jane is RJ and in the episode where RJ saves him, to counteract the common difficulty, Patrick could have ordered Timothy Carter to follow him around.

Bret Stiles I think Janes' team could find if Stiles was in the farm in 1988. He doesn't seem right to be RJ.