I just breezed through the old SW threads (man that took me back) and found some people you missed.
TedG - Ideas & Discussion/Unit Graphics/He was a pretty big contibutor back in the day
Warmaster - Ideas & Discussion/I think he made some Graphics
The Thinker - As his name implies he came up with some good ideas early in the mod
Lukree - Space Terrain
Plastic Bag - He made the R2 unit
Dark Sheer - Unit Graphics
GIDustin - Wookiee unit/Used his site to upload SW units early on
DonStamos - Ideas & Discussion
TheMorpheus - Ideas & Discussion/Unit Graphics
Bluemofia - Ideas & Discussion
mrkingkong - Ideas & Discussion
starwarscrazy - Ideas & Discussion
Hikaro Takayama - Z-95 unit
BlackHand - Unit Graphics
I think that's just about all of them although I probably missed a couple that were worthy of recognition.
Here are the major discussion threads if you want to check out what some of these people did:
I. Star Wars Mod (2/13/02)
II. Star Wars: A New Mod (10/14/02)
III. Star Wars: A New Mod (3/16/04)
IV. Star Wars: A New Mod (Vol. II) (8/9/04)
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EDIT: We should also add credits for sources of graphics and info like:
LucasArts - For using units from SW:Galactic Battlegrounds
Lucasfilm
George Lucas
Sci-Fi 3-D
Star Wars: Modelling Alliance
X-Wing Alliance
CUSWE: Completely Unofficial Star Wars Encyclopedia
The Wookieepedia