Jack Ryder - He seems more like a lost newbie to me. Yes his play has been weird, but it's hard to really know if that's because he's mafia. Maybe a claim from him would be good, because if it can be validated that will help us with others.
Abhas/hedger_14 - You'd think that one of the two experienced guys would be mafia.
Surendar - Seems like he's trying to help to town.
ste_mc_efc - Hasn't really offered a lot, I seem to remember him posting a bit more in the last game?
Manly - Like I said before this is pretty much how he usually plays, it's strange how he's so sure that surendar is town though.
Yashdude101 - Hasn't tried to make any enemies, i.e. been playing very passively which is a common newbie mafia tactic, I'd be leaning more towards him than Jack Ryder.
Simon suggested that Batman could be a tracker, I would think, he was trying to protect the identity of the role, knowing he was poisoned. I certainly believe, if there's a vigilante in the game, it had to be Batman.
Like I said before imo Batman clearly checks out as a tracker/cop from the night 0 write-up (first and third paragraphs). Plenty of superheros could be vigilante's, because most of the good ones kill/fight to some extent.