The paradigm still works if one puts the fascists and the national socialists where they belong which is on the left with the the rest of the socialists.
The big problem so many have with the correct model is that they think because the facists and the national socialists (Italy and Germany) declared war on the communists (Russia) is that the facists and national socialists must therefore be on different ends of the spectrum.
Exactly right. Nazis and Fascists sprang from the political left, not the right. The traditional “conservative right” in Europe is aristocratic/Christian/monarchist, not Nazi or Fascist.
The only reason that modern society thinks of Nazis and Fascists as “right wing” is that during WW II the Communists said they were right-wing. Examine the policies and you will discover that they both wanted the same things and used many of the same tactics and slogans to get what they wanted. A wise author once said that Nazism was national communism, and communism is international Nazism. In this context, the Nazi/Soviet war was less a clash of ideologies than a left-wing civil war.