Years ago, I heard an interview with Peggy Lee, who was asked to name the best Jazz Singer.
Her response: "You mean, besides Ella?"
#6 at NGLA is the Ella Fitzgerald of this question. It has so many impossibly intricate elements, every move of the pin introduces a completely different strategy.
Who is the Peggy Lee?
#13, Sea Headrig at Prestwick. I hope one of the Treehouse has a good photo of the green handy as IMNSHO it is the best example of how to design a putting surface with wild movement, but without a hint of artificiality.
Now, if we are to take a more elastic view of the question, the Ladies Putting Course at St. Andrews is the final word of the discussion.