Darren - Does the least and is coasting by being passive aggressive and riding the backlash from John's nom. Even Christopher made a large contribution by nominating Gemma and standing up to her a bit. Darren is all about the easy outs and what will cause the least agitation.
Stephanie - Deluded, self-obsessed, flighty, manipulative little slapper who paints herself blameless in every scenario.
Jeremy - Stephanie's lapdog. Only there to pick up her shit and lick her arse among other things. Has better chemistry with Scotty and more sexual tension too, honestly.
Also, I have to add Gemma in there but not so much because of her but because of the special treatment she gets. If she was her awful self and got punished fairly for her awfulness, I wouldn't mind half as much. But all the exceptions made on her behalf by the producers makes my blood boil.