I don't think West Virginia v. EPA will be 5-4.
I think it'll be 6-3, based on Michigan v. EPA (Kagan, Ginsburg, Sotomayor, Breyer dissented).
Roberts and Alito went with the majority.
Thomas, Roberts, Alito, Gorsuch, Barrett, Kavanaugh
v
Sotomayor, Breyer, Kagan
let's see what happens