We can only rank what we're seeing in the last few weeks, because so much has changed. It would be incredible if we get this level of play from Monahan, Marchenko, and Chinakhov, and if KJ picks up where he left off when he comes back. We'll have to wait and see.
Monahan is perhaps the most important forward because he's our only real top center option. He's been very very good. But you could also evaluate them relative to average players in their position - and all of Marchenko, Chinakhov, and KJ have looked like star players. KJ was electrifying our PP and it hasn't looked as good without him. And Chinakhov and Marchenko are driving play at an elite level.
So Monahan looks to me like an average top liner and the other three look above average (in this brief window of time), but Monahan is the most important to us, if that makes sense.