Thanks @Rookie65Architectural does have 3 different kind of Pony Walls - straight, curved, and straight glass. I just don't see how to change my foundation walls to that type. Could architectural support that wall type but not for foundation walls?
Well, I can delete each wall after creating the foundation and then draw a pony wall in it's place. There just doesn't seem to be a way to specify that type when building the foundation. Additionally, I can select any foundation wall and open the dialog and change to almost any other type - just pony walls aren't an option. Anyway, deleting each and recreating as a ponywall is not too hard. I also changed the pony wall default to match what I want. It just seems like kind of a bug to allow the functionality but make it "look" like it isn't an option for a foundation wall.