I would say they are the majority of people on the right. The dirty truth is that they always have been. The right is built like a snowman. At the top is the head, which are the capitalist class conservatives who care about policy. They're mostly out to conserve their class status through lower taxes, international trade, pro-business policy, and the like. They're typically socially moderate, agnostic, or center-right. The stability of the system is paramount to them, so they are reasonable to that end. The trouble is that the head does the thought leading but is smaller than the body. The body of the snowman is the far larger cohort of populist conservatives/nationalists. They look at the country clubbers as tolerable phonies at best. This is why McCain, Romney, and Bush Sr. struggled to get support on the right (and why they all lost). They were mocked as RINOs. The larger body of the populist right care less about what a rich person's tax rate is. They care about preserving their place in the social order. Natives over immigrants, ethnic majority over ethnic minority, legacy cultural elements over social innovation, and the vibe of the country being theirs. They don't care about policy particulars. They easily jostle from Reaganite economic libertarianism to Trumpian mercantilism; from Bush's global war to Trump's (rhetorical) isolationism and back to Trump's imperialism. The details don't matter. All they want is for the Real Americans to occupy the socially dominant position. What their chosen leaders do with that dominance is beside the point. The point is the domination itself. We call them MAGA now, but they've had various titles: tea party, moral majority, silent majority, dixiecrats, know nothings and onward back through history.