Loghain as a traitor to ferelden(But he still loyal to you even at 0 approval).
Sten can be if he thinks you are a weak leader(one of the most interserting things about him is that he doesen't think you weak if he disagrees with your opinion,he thinks you are weak if you let him change your mind )
Zevran is kinda using you as a shield from the crows(and you are kinda using him as a weapon)if he keep the opinion that you are a shield he double cross you as seem fit to him.Its up to the warden to change his mind
Leliana will fanatically betray you if she is not "matured"from the marjorlaine thing
Wynne is gonna die sooner or later,and she wanna die doing whats right(from her POV which may conflict to the warden)
Dog loves you.Period.
Oghren(See Wynne(although he could just leave since he only stays because the warden is a friend and a home since he probably became a surfacer))
Shale only reason to stay is to discover her past,since you are kinda aginst what she fought is pretty obivious she turn on you
Morrigan being a traitor or not its for other discussion since that is pov
And last but not least Alistair betray you if you make loghain a warden(since a man like loghain can't be a fellow "honored" grey warden with him because of everthing he done (But i suspect is only because of duncan))
All of them can be traitors but its pretty much you who choose what they will become(going againt cardin after everything he said to shale its pretty expected she will turn on you) In the end you have the decision in your hands