One of the best is columnist Charles Krauthammer. When Rush Limbaugh said Krauthammer was one of the smartist men in the country, I had to agree with him. The old Commentary magazine was outstanding, although it required an IQ of 145 minimum to read it. The mag was divided into a general and a second Jewish culture section. I have no interest in Jewish culture. The general section was the part I read. It was one of Reagan's favorires. Midge Dector was writing tough conservative books before others had the guts and brains to do it. Her Liberal Parents, Radical Children was written at a time when saying such things would get somebody crucified. Commentary's Susan Garment was brilliant, although I don't know whether she has written any books. Reagan's War gave insights into Reagan when he was a young man. It was worth the read. Olson's The Final Days left me flat. I bought it to support the cause, but it lacks substance and ideas that would last over time. For those who wanted to cheer hatred of Hillary, it was a hoot. However, it was somewhat predictable and repetitious. My disgust with either of the Clintons is widely known. Norman Podhoret's analysis of Viet Nam was a little to hastily written, but a groundbreaking effort.
Some of the best conservative books are written by extreme leftists. Robert McNamara's In Retrospect establish him as a leftist blowhard subversive more who sabotaged the Viet Nam war more authoritatively than any conservative writer could have done.