It's gonna be pure American Fascism. Our leaders wrote the fucking book.
It's better than that, they've let other countries have their go at it over the last century, and took detailed notes along the way. The benefit they have now is the widespread plethora and availability of networked technology that they absolutely will leverage in their quest for control.
America has already used all of the tools of fascism before, often to greater extremes. Lebensraum found its inspiration in Manifest Destiny, for example.
Expect to see things you have seen before, but now with clearer eyes. When Dems want to double their police forces and tighten preparedness of the national guard instead of maintaining or increasing social spending, recognize that the boots they are lacing are intended for your necks.
More like Russia probably. Oligarchic capitalism + christian fundamentalist values.
American. Fascism isn't a model to copy, but a defense mechanism of dying Capitalism. Its consistencies are which classes it serves, how it forms, and how to stop it. Read Blackshirts and Reds.
In the US? Probably Hungary, with a bit of Germany or Chile mixed in because Trump is too dumb to be Orban successfully.
The exact breakdown between the two is hard to say in advance.