As far as I understand it, "white supremacy" for those that desire it is the idealized end result of "white power." Much of the rhetoric from President Trump is to rally support for white power. [1]
Given the most common disagreement in the US is between those who advocate for or oppose President Trump, it makes sense that his followers would be deemed "white supremacists"
I believe the broad awakening among many white people in the US currently is the ambient benefits of invisible white power.
It's of course possible they still are. But it makes this whole discourse pretty weird.
But the Proud Boys absolutely are at the very least adjacent. With a decent dash of misogyny thrown in.
https://www.splcenter.org/fighting-hate/extremist-files/grou...