Many were not Jewish. Ben Wattenberg brought on James Q Wilson to his show Think Tank a couple of times and they laughed about that association. James Q Wilson, Michael Novak, Daniel Patrick Moynihan and countless others were not Jewish. Given the contributions of Protestants and Catholics, Irishmen, and all flavors of Europeans alike, They settled on their colleagues being "disproportionately" Jewish. Furthermore, though there were a sizable number of socialists in the bunch, that was largely (though not completely) isolated to the later generations of the much-venerated New York Intellectuals of the pre-WWII era.
Norman Podhoretz, while being the author of many books, was not the one who "literally" wrote the book on it. You may be thinking of Irving Kristol who published an anthology of his essays in 1995 with such a title. In the 1990s Podhoretz also published more conclusive memoirs than he had in the past, however. But Kristol himself, though having his own opinions and origins, nevertheless relied heavily on the contributions of those with more formal backgrounds on the social sciences: Moynihan, Glazer, Wilson, and so on.
Much of neoconservatism didn't wait to be published in book form (though, there are many, thanks to the largely academic background of its membership), but rather it was to be found in quarterly policy journals and weekly magazines.