As has been pointed out, it depends on where you live. Here in Minnesota, Joel Goldstrand would probably rank right up there at the top. Beginning in the late '80s, he began designing some of the state's most high-profile public courses. Later, Weiskopf, Arthur Hills, Bob and Rees Jones, Nicklaus and Palmer brought big-name architecture to the state, but Goldstrand would still rate very high. After the Quarry at Giants Ridge opens this summer, I'd think Jeffrey Brauer will be a top-10 name in this state as well.
I'm sure each region has second-tier designers who are very respected, prolific and well-known. Here, we've got Garrett Gill and Don Herfort who have designed many of the better-known courses in the region.
The Twin Cities just got its first Fazio a couple of years ago, but it's the ultra-private Spring Hill, miles west of the metro, which I don't think has made any impact on the average golfer.
We could use a Doak and a Coore.