You can't have any authoritarian government labeled as fascist if:
- it lacks the reactionary qualities of fascism: ideological rejections of liberal democracy, rationalism, and it's equal distance from capitalism and socialism.
- it lacks the revolutionary qualities: the centrality of the creation of a new man, the overthrowing of institutions through total mobilization (not just military, but the entire society)
- it lacks the expansionist, colonialist, ethnic-and-cultural focuses of fascisms
Under this light, there is one, and only one other government that chased the same revolutionary and reactionary ideologies, nazi Germany, with a distant second one being imperial Japan.
Spain, Chile, Argentina, Portugal are (very, very) distant thirds.
And even the distant thirds often lack the fascist qualities:
- Pinochet's came from a coup, not from a movement. It had none of the revolutionary or reactionary qualities of fascism.
- Spain's Franco outright rejected overt fascism starting already since ww2 and purged its own party from fascist elements, instead embracing a more classical combination of nationalism-monarchy-religion authoritarian regime.
- Argentina's Peronism allowed both for elections, dissent and lacked any expansionist or totalitarian ambitions.
- Salazar's Portugal outright refused mass-mobilization and the revolutionary dynamism of fascism. It exalted obedience and order, not conquest and transformation.
> But any way you swing it fascism did not stand for that very long
It absolutely did, from start to the end of the regimes in all of Italy, Germany and Japan.