There are lots of names. The inversion on Kumba is called a Camelback acording to B&M (they do have names for their inversions apparently!) but this Zero-G roll, seems to have come from Islands of Adventure, as they say the Hulk has a zero-G roll. Does it really give zero-G?? I would have though it would be high in the laterals.
Again for arguement's sake, an Inline Twist, is the same as a barrell roll, which is the same as a heartline twist which is the same as...and so on!