There is actually a pretty good list of the 600 senior appointments, not just senate confirmed, compiled by the WaPo.
https://www.washingtonpost.com/graphics/politics/trump-administration-appointee-tracker/database/
By not immediately appointing the great number, he also gives his cabinet officers far more flexibility to find the right talent for various jobs. In past, it was more oriented towards “payoff” jobs for political cronies. So doing it this way is definitely antiestablishment.
It was absolutely, completely and totally oriented towwards payoff jobs for political hacks. There have only been, traditionally, a couple of exceptions, SecDef and SecState. Treasury is an important job but has always gone to the Wall Street/banking communities preference. And even State and Defense have been subject to political hackery [Kerry? Panetta?]. The last really qualified secretary of state was Kissinger.
Everything else has been filled by political hacks for years. Clinton did it. Bush did it, and Obama did it.
All useless goddamned hacks. They guy who ran a school board and licked stamps for the campaign and needs a job. It goes on and on.
Compare to Mattis, Tillerson, etc. Every single appointment is someone who has solid credentials running things related to his position.