Front row, BMW 600, Puch or Abarth 500 (?) (the badge doesn't look Fiat), three Lloyd LP600 (with the indicators on top of the front wings), NSU Prinz 1. I can't make out what is to the left of the BMW 600. Maybe, maybe an Isetta, but looks a bit too high for it.
At the rear, two Beetles, don't know what the soft top behind them or what the car to the left is. Then a DKW which may be an Auto Union 1000S. Behind it perhaps a Renault Fregate, not sure. To the right a mystery car. The rear looks a bit like an Isetta, but it appears to have a bonnet and the screen is too flat. Further to the right two more AUs, a Porsche 356, a Merc 180 or 200, an unknown convertible (Opel?), Borgward Isabella (definitely Isabella, Al - its has the small rhombus, so post 1958), another AU 1000S, and an unidentifiable one (could it be another Porsche?). I wouldn't want to comment on the car in front of the trees, not even with max magnification.
But keep them coming, Richard!