So I was at a new build (2 years old) and the exterior was totally EIFS with some brick. The curious thing was that where the EIFS overlapped the foundation I could slide 4-5" of my hand behind the styrofoam before meeting an obstruction which ran the length of the house. I’m fairly certain this was a drainage designed system but I don’t know which one.
After some googling I think I might have found it:
It looks like the guy omitted the flashing at the bottom though on the installation I was looking at.