What Is ACC And What Are The Different Kinds, & what does each one mean?

ACC is the absence of the mid section of the brain. There is partial and there is like what I have which is complete.

Partial: Is when the connection starts to form in utero, but then for whatever reason stops.

Complete: Is when it never forms in utero.

Which one is worse? A lot of people including myself would say that complete is worse because it never formed, but in reality it's partial that's worse because of it starting then stopping in utero it has much more detrimental effects on the brain.