Looking at flavor, there are two ways people have died. Being contaminated by a human child, and being tossed through a door. Is there someone who tosses people through doors in the movies??
From this, I think we can be confident that:
-- N1 yuma was double targeted
-- N2 ADK was killed by WW (and X?) and Robz was killed by the other nk-capable person or persons, we'll call him/them "Y,Z?"
-- N3 chairs was killed by WW,X? and WW was killed by Y,Z?.
Since Y,Z? has shot three times, and every night, I think we can also rule out a town vig, just in case anyone was still considering that.
I'm still surprised at the choice of ADK for the human child nk. His accusation of WW was pretty weak and wasn't much of a threat to WW. He had already said all there was to say about it. I had thought it was a way to set WW up, but since WW killed him, I'm wondering why that choice, since it made him look bad. It also means WW,X? didn't try to kill Robz, who was a real danger to them. It suggests there may have some kind of target switching by Y,Z?.
Andrew's conviction that WW was scum suggests he may have been one of Y,Z?. DD and Axxle also voted for WW on Day 3, so they could also have suspected and nk'd him. It also makes sense that Y,Z? would be someone who suspected WW b/c they would have worried about being killed by WW, and therefore redirected his nk. Andrew would have been the most worried of anyone.