...and the answers are...

I doubt anyone has been waiting with bated breath for the follow-up on my siblings identities...but just in case anyone was interested...

From left to right:
Nate-my step-brother, son of my dad's wife, he's a chef, and is almost exactly one year younger than me
Court-my youngest sister, 9 years behind me, daughter of my dad & step-mom, she's a nurse practitioner & getting married in March
ME!
Carrie-7 years behind me, also daughter of my dad & step-mom, a dietitian and mama to two beautiful girls
Greg-my only full-blooded sibling, 3 years behind me, finishing residency in Kansas City, and has 3 kiddos.

So there you have it. One half of my family of origin.