If we start with 'Top-down  an apex of professors and doctors buttressed by the holders of college degrees (many of them lower-level administrators, teachers, and researchers within the system).', does it make sense to conclude with 'An apex of professors and doctors that hold college degrees. '
Top-down  an apex of professors and doctors buttressed by the holders of college degrees (many of them lower-level administrators, teachers, and researchers within the system).###An apex of professors and doctors that hold college degrees. 