I think that Santino could give to you more precise answer about this as well he is more study this subject then me. But be sure that I will try to give you an answer too. To regret I think that I have no archive image in my collection to this subject but I will see for other source
Its look like the larger one is Gotha WD 14 and behind it could be Friedrichshafen FF.33. Problem is the small fighter, it could be Euler fighter. Not 100% sure...