In content, these ideologies are distinguished by five main components:
(1) extreme nationalism, the belief that there is a clearly defined nation which has its own distinctive characteristics, culture, and interests, and which is superior to others;
As seen by how "America first" to them means America must make everything it buys, but other countries must gladly accept American goods, Trump's claim in 2023 that illegal immigrants are "poisoning the blood of this country,"  the 51st state threats are a compliment (US Ambassador to Canada), and that it's an insult to them that Canadians would be horrified by that rhetoric (Fox News).
(2) an assertion of national decline—that at some point in the mythical past the nation was great, with harmonious social and political relationships, and dominant over others, and that subsequently it has disintegrated, become internally fractious and divided, and subordinate to lesser nations;
Trump and his supporters say this stuff a lot: America was great before Biden, America was great before free trade; America was great before 'woke', etc. And now it's being taken advantage of and the democrats/leftists are dividing everyone with hateful and violent rhetoric.
(3) this process of national decline is often linked to a diminution of the racial purity of the nation—in some movements the nation is regarded as co‐extensive with the race (the nation race), while in others, hierarchies of races are defined generically with nations located within them (the race nation), but in virtually all cases, the view is taken that the introduction of impurities has weakened the nation and been responsible for its plight;
See above, Trump on illegal immigrants: “They’re poisoning the blood of our country. That’s what they’ve done." It's one thing to talk about the negative impacts of illegal immigration; it's another thing altogether to talk about a country's blood being poisoned, or made impure. For comparison, here's a line out of Mein Kampf: "For a racially pure people which is conscious of its blood can never be enslaved by the Jew."
(4) the blame for national decline and/or racial miscegenation is laid at the door of a conspiracy on the part of other nations/races seen as competing in a desperate struggle for dominance;
I think I litigated this enough. 
(5) in that struggle, both capitalism and its political form, liberal democracy, are seen as mere divisive devices designed to fragment the nation and subordinate it further in the world order.
They're now going after companies that say or do things they disagree with (look at how they bullied networks, law firms, and universities), calling the decisions of the free market "hateful" and "biased" when it impacts Trump or his supporters. And on that note, companies are punished and threatened if they do not reshore to America, and countries trying to maintain those industries are similarly targeted. What free market? And they're pushing republican states to gerrymander with the explicit goal of entrenching Republican political domination, accusing judges of being anti-American and overstepping their bounds, and pledging to send "monitors" to the polling stations in some blue states.
With regard to prescriptive content, the first priority is the reconstitution of the nation as an entity by restoring its purity. The second is to restore national dominance by reorganizing the polity, the economy, and society. Means to this end include variously:
(1) the institution of an authoritarian and antiliberal state dominated by a single party;
They're sure getting close, between the gerrymandering and election monitoring, the use of troops in the streets of multiple cities, and now their open deliberations about how to get Trump a third term.
(2) total control by the latter over political aggregation, communication, and socialization;
Not only are they bullying networks and suing newspapers, but their supporters are consolidating huge swathes of the media landscape (one is even in the process of buying the company that owns CNN), and about to get TikTok's US operations under the ownership and control of a board dominated by Trump supporters. And people who directly quoted Charlie Kirk after his death were threatened with legal action, deported (if on a visa), fired after the government pressured their employers, etc.
(3) direction by the state of labour and consumption to create a productionist and self‐sufficient economy; and
Again, just look at the tariffs and Trump's rhetoric justifying them. I mean sheesh, foreign kitchen cabinets are a "national security threat" now!
(4) a charismatic leader embodying the ‘real’ interests of the nation and energizing the masses. With these priorities fulfilled, the nation would then be in a position to recapture its dominance, if necessary by military means.
The guy literally said that the US airforce bombed British airports during the Revolutionary War, and that speech was lauded by his supporters - who then voted him in a second time. And despite being born into wealth, adorning everything in gold, and saying he recently learned about "an archaic word called groceries," he's seen as a man of the people who understands the common person in a way others don't. And his base genuinely believes America is respected and loved again because of his words and actions.
Such priorities were explicit in the inter‐war fascist movements, which indulged in racial/ethnic ‘cleansing’, established totalitarian political systems, productionist economies, and dictatorships, and of course went to war in pursuit of international dominance.
I'll only add that they're using bombastic language about bombing and destroying their enemies, revived the name "Department of War," mused about annexing Greenland and Panama with military force if necessary, and seem hell-bent on manufacturing cause for a war against Venezuela.  
But such parties can no longer openly espouse these extremes, and national/racial purity now takes the form of opposition to continuing immigration and demands for repatriation; totalitarianism and dictatorship have been replaced by lesser demands for a significant strengthening in the authority of the state, allegedly within a democratic framework; productionism has become interventionism; and military glory has been largely eschewed.
lol 
2/2