I can't place it right now, but I suspect at most, there have been a few 10 or so course lists for exceptional or unique courses, not the full 100. In fact, if there were 100 that fit the criteria, they might not be all that exceptional anyway. The dirty dozen would be a better list for that.
I have no interest in trying to invent another top-100 list, but there are WAY more than a dozen courses that would qualify as "exceptional" by my definition. [I don't like to use the word "unique" because of semantic arguments about whether anything is truly original ... the first definition of exceptional as "rare" is good enough for me, in that it disqualifies instances of an architect using the same concept 100 times.]
Just out of the world top twenty, I think you'd have to include as exceptional:
1 St. Andrews as the mother ship
2 Pine Valley for its target golf concept
3 Cypress Point for its integration of natural dunes
4 Oakmont for its exploration of "tilt"
5 Royal County Down for its embrace of blind shots and shaggy bunkering
6 Sand Hills for its lack of artifice
7 Augusta National for its width and the severity of its greens
8 Pinehurst No. 2 for its green complexes
9 Merion for its genius routing plan
And that's just a start - I'm not looking at the list. Suffice to say there will be plenty of room for Askernish, Prestwick, Dornoch, Royal Worlington & Newmarket, and maybe Kingsbarns or Castle Stuart; also Garden City, Shinnecock Hills, Harbour Town, the TPC at Sawgrass, Shadow Creek, The Sheep Ranch and The Loop, and a few holes of Black Diamond; and then the way-out-there places like Himalayan Golf Club.
But as Ian's original post emphasizes, I'm not trying to define it, nor to suggest that doing something truly exceptional should be everyone's goal. It's only for the people who think differently enough to get there without trying too hard.