I think you have a fundamental misunderstanding of the politics of Herbert Hoover if you'd call him (or any of the republicans like him) authoritarian.
Since I'm being downvoted (probably appropriately for a half-assed answer), some clarification: Mr. Hoover was demonstrably happy to (ab)use the powers of the state against both political and civilian domestic opponents.
I actually don't mean to single him out in particular, but more to point to the overall trend.