You're going to have to do your own homework on this one, I got burned once before on HN for id'ing someone that preferred to stay anonymous and clearly these people don't want to be out in the open with what they built.

But I can tell you my starting points: there are few threads on bitcointalk that try to ID satoshi, start with those, then read a bunch of papers, figure out who the co-authors are and sooner or later you'll end up with the same set of names. The interesting bit to me is that those two groups are both roughly equally likely but I can't find any clear signs of collaboration between the two.