I think the terms “good scholar” and “insightful” are fairly subjective and open to interpretation so I am curious how you define them. I wonder if you could provide a few example of comparable people you think fit those descriptions better?
I guess as a disclaimer I should say I am more of a progressive, and not from an American tradition.
But in the same generic "conservative / learning libertarian" tradition as Sowell, I vastly prefer people like Tyler Cowen and to a lesser degree Russ Robert to give two very famous examples.