Fascism is fascism. National Socialism is national socialism. Both are Socialist ideologies. The class conflict Marx predicted would transpire in Western industrialized nations first, failed to occur sending Socialism into a crisis that saw the birth of two variants; Fascism and National Socialism. Both rejected the Marxist dogma of class conflict and the worker's dictatorship instead opting for citizenship in the case of Fascism, or ethnicity in the case of Nazism, to be the unifying/polarizing factor for the struggle for supremacist power. Fascism is fundamentally not a racial ideology, certainly less racist than Marxism and much less racist than Nazism. Marx was an ethnic Jew and an ardent anti-semite who considered capitalism and Jewishness inextricably linked. Jews were capitalists and Capitalism was Jewish, thus the term "Jewish Capitalism" that Hitler latched on to. I could go on to categorize today's Neo-Marxist hyper-focus on race, but that would likely derail the entire thread lol. I understand the deep-rooted desire to obfuscate the issue and preserve the current false dichotomy status-quo, so let's agree to end it there.
