The Dornier Do228 commuter aircraft has the basic square fuselage of the Do28D, but with engines under the wings, a long nose and a twin wheel nose wheel configuration with retractable landing gear. Typical are the pointed (raked) wingtips and low tail.
This high wing utility aircraft has upward opening cockpit doors, that hinge in the middle of the windshield. That is the most distinctive feature.
The Dornier 28 is quite unique: high wings, a fixed tail wheel landing gear and especially the two engines placed on stubs next to the front fuselage characterise this aircraft type.
The Dornier 328 is quite a unique aircraft: there are both turboprop and jet versions of the aircraft! Especially the jet version is easy to recognise due to its straight wings with jet engines under the wings and a T‑tail. Furthermore, the Do328 has four cockpit windows, oval cabin windows, a pointed tail cone and main landing gear attached to the fuselage.
The Do335 is a push-pull piston twin powered fighter, which is quite unusual. The aircraft also has vertical and horizontal fins in a crucifix shape, but all are attached to the fuselage. So a conventional tail with ventral fin that mirrors the vertical stabiliser.
The Dornier Seastar is a small amphibian aircraft with a parasol wing with two engines on top. The two turboprop engines are paired in a single nacelle, with one powering a pusher prop and the other one a puller, much like the Dornier Wal before the Second World War.
Douglas A-20 Havoc
The Douglas A-20 has a mid-wing configuration, but with the wings placed above the middle of the fuselage. Under the wings are long nacelles with radial engines and a place to store the single wheel main gear. Typical is the blunt nose.
Douglas A-26 Invader
The wings of the Douglas Invader go through the fuselage, just above the middle. Typical are the long nacelles under the wings, holding the radial piston engines, all single wheel gears that retract rearward (the mains in the nacelles) and the trapezium vertical stabiliser with hardly rounded corners.
Douglas A3D/A-3 Skywarrior
The Skywarrior is a big aircraft that operated from aircraft carriers. Characteristic to the bomber are the cruciform tail with low mounted horizontal stabiliser, jet engines in pods on pylons under the wings and blunt tail cone.
The Douglas Skyhawk is a small fighter with semi circular air intakes just after the canopy, delta wings and delta shaped horizontal stabilisers attached to the vertical stabiliser in a rather low cruciform shape. Typical for the A-4 is the long nose gear so that the aircraft is nose high, tail low when on the ground.