I believe the 'WHO' are the anti-american organizations/corporations.
If you haven't read or heard of the Prussiagate substack, I highly recommend it, it goes into great detail of the history of these powerful organizations/corporations/ deep state in general. Bit of a long read ⚠️
Technically the opposite of christian nationalism would be satanic 'globalism'. Nationalists can be socialists ie Nazis. But don't get me started on, and I'm sure we're all aware of, the deceptive war on words that they've deceived generations by framing nazis as a right wing thing. Very leftist. Communists and nazis are two sides of the same coin. And as a historian put it in a video I watched recently, national socialism (nazis) aren't anti-communist, they are counter communist.
Really boils my blood hearing them twist history, definitions, and the truth.