WoB = Word of Brandon.
DiG = Designated Information Gatherer
Also, it occurs to me that if Grumpy is Galladon, then one of the other two might be Adien, the autistic kid.
Also Nazh is clearly not an Elantrian, unless he's using a pseudonym as the name is neither Aonic nor Dula.
Also, I really don't think Hoid is the one writing the AA, he really doesn't seem to be into traditional scholarly pursuits. He's way to busy running around meddling.