Well, I would imagine he used the Official Approved Characters list. Seems the natural choice (and it's what I used when I took an accounting of levels/classes/races recently).
However, yes, there are a number of characters waiting for approval, or just recently approved. I know there's a third sorcerer, and dimsdale has a barbarian. I think with shamans and druids, we just need to wait a bit. I know I've heard rumors or a druid or two being cooked up, but people might be taking their time since there's a big load of characters due to finish adventures and not enough new adventures for them to go on (which would mean that 2nd characters will have to wait anyways).
I think it would be interesting to go through all of the active adventures and the tavern and take a census of all the currently active characters, though that would be a fair bit more work.
Lastly: TwoHeads, shame on you!

The other bugbear rogue is Heinrich, in Ring of the Feylord with Haruka.

Not sure if we can count him as active, though.