Missing a lot of the tags. Here's the ones I noticed:
I should have Judge tag (at least if BW Judges count).
CommBA should have the Approver tag.
Derian doesn't really actually URPG, but I think Monbrey said he could still technically ref if he wanted to.
Felly should have the Grader tag.
Gmandiddy is also a BW Judge, but hasn't URPG'd much recently.
MaverickKaiser is URPG banned.
-Pichu Boy- should have the Judge tag.
Siless should have the Ref tag.
I thought TheEvilDookie was an offical/moderator, but I'm not sure. He's at least an approver though.
TheProtobabe should have the Curator tag.
WinterVines should have the Ranger tag, and there are probably other Rangers I wasn't sure about.