Thanks ! BTW here another ?unknown? Focke Wulf Project of 1944
(fighter with movable gun turret 3x MK-103) Someone knows more about this design ?
Mnafred Griehl states that triple mount drawing as meant to a Heinkel Long Range Bomber, included in the He 177 entry ( page 206 ) of "Deutsche Flugzeug-bewaffnung bis 1945", Motorbuch Verlag, 2008. I have no information on the other mentioned fighters, tought.