Far right, as opposed to neoliberal, means fascist to me, where fascists:
Hold reactionary social views — are racist and sexist and homophobic, etc.
Support capitalism and despise socialists — see what happens to socialists under every fascist regime in human history. Hitler was in bed with big business, and some of the first people he put in concentration camps were socialists, communists, and labor organizers. In Indonesia, more than a million communists were murdered with US backing, a mass killing detailed in The Jakarta Method and a documentary called The Act of Killing. Socialists were also slaughtered in Guatemala, Nicaragua, Chile, El Salvador, Argentina, and Bolivia. This is incidentally why the US so often supports fascist regimes — they kill socialists.
And yes, are authoritarian, but being authoritarian is not what makes them fascist. What makes them fascist is that they use authoritarianism in service of the above positions.
They just passed the most comprehensive pro-LGBTQ rights package in history.
Cuba doesn't allow you to create a pro-capitalism party and start passing around leaflets saying "we should sell all our resources to American businesses," because if they allowed this, the CIA would spend hundreds of millions of dollars a year funding and training that party, installing agents into the leadership, co-opting local movements, publishing newsletters full of slander and propaganda, and doing who knows what else.
Cuba is authoritarian because they have to be. Allende's Chile was not authoritarian, and guess what happened? The US coup'd Allende and installed a fascist dictator who threw socialists out of helicopters and tortured them to death in stadiums. The PKI under Aidit in Indonesia were a peaceful socialist movement. What happened? Aidit was killed, and over a million Indonesian socialists were rounded up and butchered with American backing.
As for the Russian Federation, yes, their government is right wing. Putin is a homophobic capitalist reactionary. If you say this on Hexbear, you will find that everyone agrees. Go try it if you doubt me.
As for China, the more you learn about China and its government the less you'll want to give a simplistic take about China in a thread like this — but the short answer is no, they are not far right. They have some Confuscian cultural baggage but are increasingly progressive on social issues, and after decades of state-sanctioned capitalism to pull in foreign investment and evade the sort of economic warfare that hamstrung Cuba and the USSR, they are, at least ostensibly, adopting an increasingly anti-capitalist posture. As for Xinjiang, again, it's a complicated topic and I'm not an expert, but I do know that a lot of the worst claims have been demonstrated to be bullshit, from sources like Adrien Zenz and Radio Free Asia. Even the UN concedes there is no program of mass killing or organ harvesting. It's definitely still bad, but there's enough bullshit that I really don't want to wade into it here.
"Far-right politics, or right-wing extremism, refers to a spectrum of political thought that tends to be radically conservative, ultra-nationalist, and authoritarian,"
That's not how it works. Your beliefs are your own. You either want workers to control production, or you want owners to control production. You decide that based on your own moral convictions and understanding of the world.