Think John Podesta, and the Podesta brothers.
Trump's steps outlined: here, here, here, here, here, here.
This image, from second to last of the above linked items, shows one distinct individual not touched, unfortunately, by any executive branch lobbying reform. He should be. Members of both houses of Congress should be likewise banned/curtailed from lobbying revolving door usage; as well as Congressional staff persons.
The revolving door - it's swamp to be drained.