I can only go by with what I see in photos, but I'm going to cheat here and select 5, in no particular order.
1. Mackenzie- for many of the same reasons that Tom (both of them) cites above. And he wasn't afraid to position holes that created a so called imbalance to the standard of what a course should be such as at Cypress Point where it has back to back par 3's and par 5's. He put the right holes in the right spots. And the bunkers are a thing of beauty.
2. Tillinghast-Because the man never tried to repeat himself and therefore didn't allow himself to be pigeon holed. His courses varied in look and design so much.
3. Colt- Royal Portrush, Sunningdale, what he contributed to Pine Valley, and many more, need I say more? The first IMHO of the true greats. And man that furthered Mackenzie's education has to be admired.
4. Thomas- To be able to tackle that canyon in Pacific Palisades and create that course is genius. It's too bad most of his work is gone.
5. Flynn- "Speak softly and carry a big stick." The man just designed great courses. Shinnecock, Cherry Hills, Philadelphia CC, Rolling Green, HVCC, Kittansett and his contributions at Merion amongst many more.
I have only played one of Mackenzie's and none of the others so I have to go by what I see in photo's, so my descriptions of why are very shallow. But what I see of the these men make them my favorites.
35 years old
Haven't played enough to keep a handicap since my daughter has been born, but around a 10 handicap.