A couple of days ago I did a head count on a class basis, Deuce. I fished it out of the trash for you.
The criteria I used was level 2+ characters in the DWI or active games. A character's 'class', for this exercise, was whatever the definitive majority (difference of 2 or greater) of non-prestige levels were taken in. When tied/too close to call, it was listed as 'mutt'. Then, as an afterthought, I added in characters at home. In no particular order:
Inquisitor 1
Bard 3
Wizard 5
Summoner 4
Ranger 4
Rogue 2
Fighter 5
Witch 1
Barbarian 3
Mutt 4 (Cythera, Ru, Kalinn, Jonas)
Cleric 1
Magus 1
Sorcerer 2
Druid 4
Monk 1
Ninja, Paladin, Alchemist, Oracle (and possible forgotten others) 0 ea
To me, the shockers are so many wizards, so few clerics.
Edit: Then I got bored and went through and did races on the above sample:
Merfolk 1
Human 22
Gnome 1
Assimar 2
Tengu 2
Half Elf 2
Elf 4
Tiefling 2
HalfOrc 2
Halfling 2
Dwarf 1
This is utterly unsurprising from my experience, anyway. A flock of humans, followed by the elf/half elf block, then a smattering of everything else.
So, for what it's worth, there ya go.
PS: It's a little off, probably. The two don't add up to the same.
PPS: Fixed: One typo and one incorrect assessment.