My favorites, from those with whom I've been BCD:
I could name several retirees, including but not limited to Angela Taylor, Caitie Mae, Catherine Adair, and Violet Star. But among those still active, those who stand out in my mind are Carrie Hillcrest and (now that she's back) Jenna.
A lot of other ladies might qualify as well, but I may just not have noticed it as much. I get, ummm, distracted at times.
And of course some ladies I've not spent as much time around.
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Edited to add: These types of threads do tend to elicit the "soft bigotry of low expectations," applying standards that are lower than for civilian ladies or for other guys. Which makes the information posted of limited value. And it's all in the eye of the beholder; what I call "articulate" and "witty" might be very, very different from what Joe Blow calls "articulate" and "witty."