To answer the original question, I'd say anyone who knows the game, construction and applies themselves by spending the time to produce quality work.
Not everyone will know who these people are, but with time they will emerge.
Ron: When I read your stuff we tend to disagree a fair bit... and this is no exception. I think discrimination is a good thing. I think pointing out who has done excellent work and honoring it, even predicting it is a good thing, a great thing. Discriminating between architect "A' and "B" elevates standards. There's too much relativism in this world and not enough identification of individuals who've gone out, sucked it up and produced quality. It's good to reflect the values you hold dear, and if it's not architect "X" or "Y" or whoever you might like...oh well. Perhaps it will get you thinking, analyzing, striving.
Tell me, how do can "members of GCA ...encourage all "emerging architects" to do excellent work"? By saying...oh please do good work guys? Uh, uh. By saying, hey I like this guys work because....and I think he'll be good because... That's how you elevate standards, not by nice speak to the industry which is largely deaf. As one architect posted here (paraphrasing) "50 internet guys who don't know much".
Ron, there are enough people here to visit a vast array of courses...I wouldn't say they're narrow in their view, but have narrowed down what they like. Some are bandwagoners, "yes people", but that happens everywhere...and actually I see it far less here than anywhere in the golf architecture business. You want to see the bandwagon...look at the major publications and listen to the broadcasts...this place is a breath of fresh air. It discriminates and identifies and that's great. There are no editors, no publicists, no "names" to suck up to or please on this forum...that's a large part of its strength. Identification and discrimination.