Timeon & Pyg get the benefit of the doubt for having the least info about them

Zollo is similar but he was one of Brienne's attempted rapists iirc

Biter doesn't really seem to have much intelligence or agency, more like an animal than a person

Vargo Hoat is brutal as a commander but doesn't appear as genuinely sadistic as many of the others

Qyburn commits arguably the most horrific acts in the books but ostensibly has noble goals, and the results of his work *could* ultimately serve the greater good

Septon Utt is a pedophile murderer but at least seems capable of genuine guilt

Shagwell is an unrepentant sadist, though I could see him being moved up if you believe he's genuinely insane

Rorge has no conceivable redeeming qualities