47 – Donald Ross
23 – Tom Fazio, Pete Dye
22 – Jack Nicklaus
19 – RTJ Sr
16 – AW Tillinghast
15 – Michael Hurdzan
12 – Seth Raynor, Coore & Crenshaw
9 – Tom Doak, Old Tom Morris, RTJ Jr, Arthur Hills, Arnold Palmer
8 – Gil Hanse
7 – William Bell, Willie Park Jr
6 – Perry Maxwell, Devereux Emmet, Rees Jones, Dick Wilson, Jeff Brauer
5 – CB MacDonald, James Braid, Mike Strantz, Willard Byrd, Jack Kidwell, Davis Love III, Ellis Maples, Tom Jackson, Gary Player
4 – William Flynn, Harry Colt, Francis Duane, Ted Robinson, David Rainville
3 – Alistair MacKenzie, George Thomas, David McLay Kidd, CH Alison, Langford & Moreau, Stiles & Van Kleek, Russell Breedon, Dan Maples, Bobby Weed, Johnny Miller, Schmidt & Curley, Barry Serafin, Gene Hamm, Clyde Johnston, Bob Cupp, George Cobb, David Gordon
Of course, attribution can be tricky for certain courses, especially older courses that have been touched by many over the years. I would say my list above is best efforts for certain courses/architects, as to who gets primary credit. Particularly in the UK, there are many that have some combination of Old Tom Morris, Harry Colt, James Braid, Willie Park Jr, as well as a few others.
I only compiled my list of all courses played last year. This thread inspired me to do the research on their designers and here's where things fall. I've played 217 courses in my lifetime, mostly in Virginia (66) where I was born and raised, and North Carolina (77) where I've lived the past 15 years. Not surprising Mr. Ross tops my modest list:
21 - Donald Ross
10- Tom Fazio
9 - George Cobb
7 - Ed Ault, Greg Norman
6 - Robert Trent Jones, Sr., Ellis Maples, Dan Maples, Jack Nicklaus, Russell Breeden
5 - Mike Strantz
4 - Alex McKay, Tom Jackson, Gene Hamm
3 - Old Tom Morris, Pete Dye, Willard Byrd, P.B. Dye, Buddy Loving, Ferdinand Garbin
2 - Perry Maxwell, A.W. Tillinghast, Eddie Hackett, Fred Findlay, Arnold Palmer, Gary Player, Michael Hurdzan, Rick Jacobson, Lester George