Though, Both Zolo and Ripped can't be in the same team, but I think one of them is likely to be scum here.
I don't have much of an impression of Monochrome to be honest, but from what I've seen he's seemed to ask generally useful questions.
Can't remember seeing much solving though. I can look through his posts and see if I get a better feel.
Aries is a bit difficult for me to read here since his posts are very scarce, they are well crafted and good, but does perhaps feel a bit stiff. That could just be interpretation, and not facts though, so I wouldn't take that as hard evidence for anything.
But I'm pretty sure that Naomi/ Pein/ Midnight are indeed town. I'd be surprised if not.