Unfortunately, that is going to be the case. While I have no role to claim, I assure you that I am not mafia. Of course nobody is going to believe it, and if Booster really is the uncounterclaimed Doctor, then it's obviously those who voted Chronos. My guess is mafia might be in the middle to late of the Chronos-bandwagon because that's the safest spot to vote and not get asked.
That would be GengarWithGlasses, Gengar voted after Chronos voted for himself, (Hence Chronos was the tiebreaker).