Probably the Orthodox, followed by the Catholics, and then Protestants? Just going off what I know about history and factions. I have respect for people from all three camps so this is not meant to be a dig at anyone just my honest opinion.
I'd SWAG Catholics, Protestants, Orthodox. Just because as a general rule the Orthodox do not bow to the kings of the world-only God is king. Nicholas is one of those rare exceptions because of what he did to help the Orthodox of Russia and his martyrdom. (Constantine is also an exception, with very good reason)
They all worship the god of the Jews and spend a lot of effort explaining why the jews are better than them or are useful idiots. In an optimal world they'd want a god that chose them first but they also didn't choose the emperor who'd make christianity their ancestor's faith via the state's force.