Fascist policies on economy are not fundamentally different than neoliberal policies but here is a small article with some insight on nazi policies:

https://www.historicly.net/p/the-economy-of-evil

Fascism and Big Business

Italian Industrialists from Liberalism to Fascism: The Political Development of the Industrial Bourgeoisie, 1906–1934

Under the Axe of Fascism

An Institutional History of Italian Economics in the Interwar Period — Volume I: Adapting to the Fascist Regime

An Institutional History of Italian Economics in the Interwar Period — Volume II: The Economics Profession and Fascist Institutions

Export Empire: German Soft Power in Southeastern Europe, 1890–1945

Behemoth: The Structure and Practice of National Socialism

Not particularly detailed, but have you read blackshirts and reds by micheal parenti?

wages of destruction by adam tooze

This is a thread I didn’t know I needed.