Let me be honest that I did these very quickly using Ctrl-F, so there are replications, mistakes, and misses. I did this hastily and these data are not entirely accurate. However, they should be quite close. In order, the most cited courses were:
1. The Old Course
2. Pebble Beach
3. Royal County Down
4. (tie) Cypress Point and Pacific Dunes
6. Riviera
7. Pine Valley
8. (tie) NGLA and Sand Hills
10. (tie) Merion and Shinnecock
Next 10 in no particular order:
Garden City, Bandon Dunes, Pasatiempo, Pinehurst #2, The Ocean Course, Spyglass, Crystal Downs, Ballyneal, and Royal Melbourne, with the 10th spot held in honor of the courses that deserve to be listed here but were miscounted.