So far, both
Salon,
Newsweak,
Politicus USA and
other hard-left websites have accused Trump of being “fascist”. So that is not terribly original.
The term “nativist” is left-speak and fearmongering. There has been nothing thus far out of Trump that is siding with any particular race in this country. Illegal immigration is indefensible at all points.
Who in the current Uniparty cares for separation of powers? Boehner and McConnell have actively worked to end them.
Everything else you wrote in the OP has been uttered either by left-wing or RINO sources.