I searched and couldn't find Alexandria Lowe, but in my humble experience... Svetlana Bondell back when she was known as Petra had an ass to die for. I wound up going twice with her from behind and could have kept going except for running out of time.

The other was many years later: Manuela / Haven, TER ID: 332597 had an ass that was the best natural bubble-butt ever. She was a body builder but not an over the top kind. She was one of the few providers who I never got a BJ from because we were so hot to get started and get it on. I wound up with her in prone/lazy doggie and remember the experience vividly to this day.

After many years of exhaustive market research within the ATL metropolitan area and surrounding environs I would have to say Brittni James - 270524. I don't know if she is still active, but she is the fittest MILF, with the finest Gluteus Maximus I have encountered either ITP or OTP. She and her butt are absolutely gorgeous and she works very hard to keep it that way. Not overly developed, just perfect, and if she wanted to I bet she could crack walnuts between the cheeks.
You guys in Atlanta are very fortunate to have so many wonderful ladies to choose from. Be well.