I'm not sure that "extreme right wing" necessarily entails aggressive state intervention - you could have, for instance, corporatist societies, or societies in which nominally non-governmental market mechanisms are used to achieve right-wing ends, or a free market but only within a right-wing social context enforced by authoritarian government action.

But generally, I'm thinking of the paleolibertarian current here, people like Ilana Mercer and Hans-Herman Hoppe, and then also definitely a bunch of people in the neo-reactionary movement, particularly Mencius Moldbug.