Which loyalists would they be? Remember most of the top positions are political appointments and almost all of those resigned when Trump became president (and he accepted pretty much all the resignations, contrary to most presidents, and now has issues filling those positions).
He also chose the seventh seat on the Supreme Court (so four Republicans), has his Attorney General in place and a new FBI head has been appointed on his watch after he fired the previous one*.
So again, how many Obama loyalists are there and how are they apparently still stalling investigations?
*im not suggesting the new FBI head is a stooge, just it sunlikely he’s an Obama loyalist.