Suggestion: TV's Über Producers

In the '70s, we had Norman Lear and Quinn Martin, in the '80s we had Stephen J. Cannell and in the '90s we had David E. Kelly. Over all of those decades we had Aaron Spelling. Which of the current über TV producers who dominate the American airwaves makes the group of shows you like most? 

Greg Berlanti - Legends of Tomorrow, Blindspot, The Flash, Arrow 
Chuck Lorre - The Big Bang Theory, Mike & Molly, Mom 
Ryan Murphy - American Horror Story, American Crime Story, Scream Queens 
Shonda Rhimes - Grey's Anatomy, Scandal, How to Get Away with Murder, The Catch 
Dick Wolf - Law & Order: SVU, Chicago Fire, Chicago Med, Chicago PD 

List: http://www.imdb.com/list/ls061667738