The one that comes to mind for me is JJ Scott from the early to mid 70's. I worked with him as an intern at WRJZ in Knoxville when it was top40/rock from '76 to '80. He moved on to PD in Houston and returned to Knoxville for a short while and then on to Chicago. Sadly he passed away about 12 years ago.
Second the nomination for JJ Scott (Bill Towery). I, too, worked with him at WRJZ in 1979-1980. He was a great air talent, an even greater production director, and a terrific man. I'm honored to have known him