Yes, should have been White Lightning, Fast Lightning, X-Copy. I read "Fast" above, when there was "White" on the screen. So in fact X-Copy was already a third gen product, which explains why it was so good and easily adopted by many users.
I've been trying to get in touch with Frank Neuhaus an Hans G. Berg for some time now, but apparently... no luck. Anyone with a clue please let me know.