Everyone else has pretty much said what I would want to say, but i'll try some analysis anyway. The likely wolves would either be the very early voters of Graymarch and johho (Avernite, me, dedonus, and sleepy) as they could've voted in a way that was meant to not yet be dangerous for johho or graymarch, aedan for not voting the wolves at all, and the late Graymarch voters (chieron and Arkasas) for helping to save johho at the cost of Graymarch. Being the first vote on each, and so being the least potentially dangerous, dedonus and Avernite are not out of the question, but they're also not likely enough wolves for any other reasons I see so far to be worth considering at this moment. Sleepy pushing up johho to be the leading candidate at the time seems unlikely to me as something a wolf would do, as protecting the veteran of the pack would probably be the more likely decision in most cases. Since I did the opposite and potentially helped to save johho by my vote, I can see why I'd be considered suspicious, but putting both wolves in the lead wouldn't be a great idea when I could do otherwise in my opinion. I'm also not suspicious of myself obviously as I know i'm a villager. Aedan of course is suspicious as the only living player to not vote a wolf, but I don't have much more to analyze there. Chieron in a way was the one to save johho as, at the time, only wagon, arkasas, graymarch, and johho could have voted. This meant that johho could safely vote graymarch and easily survive unless wagon, arkasas, and graymarch all decided to vote him, which is not incredibly likely though technically possible. As the last vote, Arkasas was somewhat inconsequential at the time though he could've allowed graymarch to tie himself with johho, something which only would have happened had graymarch felt particularly spiteful. Because his vote didn't matter as much, its harder to tell his allegiance, though a wolf arkasas would not surprise me. Of all the above, I find chieron the most suspicious.
As for others, grimlock can only really be bad if he's a sorc with zombie hunter that doesn't know the wolves. Ironhide's vague attempt to defend Graymarch could be an attempt to trigger a switch away to new candidates, but since he stayed on johho, i'm not sure how likely that is. Plus, voting johho when he did in the first place doesn't seem like a great idea for the same reasons as sleepy's vote, so I find him to be unlikely due to the difficult explaining he'd have to do after making that vote and then switching shortly thereafter.
So then, as everyone has already stated, I think our best three candidates are chieron, aedan, and arkasas. My order of highest suspicion is actually in that order, in part because arkasas is always a mystery to me and his timing yesterday was rather unhelpful for determining what he is, and because I'm bad at post analysis and so can't read into aedan's allegiance very well. As such, I will for now put chieron into the lead.
Vote Chieron