The Beechcraft Queen Air and King Air have low wings and low horizontal stabilisers, with two piston or turboprop engines and a main gear retracting forward into the nacelles. The Queen Air has square cabin windows, while the King Airs have round ones.
Beechcraft T-34 (Turbo) Mentor
Beechcraft made a primary training aircraft based on the Bonanza private aircraft. Especially landing gear with triangular main landing gear doors is a key feature copied from the Bonanza, as is the nose of the piston powered version. The fuselage has a tandem canopy, with the student and instructor pilot sitting at the same level. The turboprop version is shown here.
The Beechcraft T-6 is a development of the Pilatus PC-9, and shares a lot of its external appearance. The T-6 has a smaller dorsal fin though, a small ventral fin and a three-piece canopy.
Beechcraft Travel Air/Baron
Thanks to being the twin development of the Bonanza the Travel Air and Baron retain certain elements of the single engine predecessor. Most obvious are the triangular main gear doors, that are typical compared to other small twins. Also the cabin windows are similar to those of the Bonanza.
Bell P-39 & P-63
These two Bell fighters have the liquid cooled piston engine in the middle of the fuselage, just behind the canopy. You can easily spot the exhausts at the side of the fuselage there. The propeller is still at the front though. Also the nose gear configuration is unusual for a fighter from the WW2 era.
The first aircraft to exceed a speed of Mach 1 is this rocket powered aircraft. The X-1 has a bullet shaped fuselage and straight wings right through the middle. It comes with different canopy versions, here the X-1B is shown.
This experimental fighter has a similar appearance as the Saab 29 Tunnan, so with an air intake in the nose and exhaust below the rear fuselage. It was used to test variable sweep wings.
This tiltrotor was a research aircraft for what would later become the V-22 Osprey. The XV-15 has large diameter rotors at the wingtips, that act as propellers when the whole nacelles are tilted forward. All gears have double wheels. All-in-all quite similar in appearance as the V-22, but much smaller.
The Osprey tiltrotor aircraft has large diameter rotors at the wingtips, that act as propellers when the whole nacelles are tilted forward. All gears have double wheels. The rear fuselage slopes up to allow (un)loading via a rear ramp.
This Bellanca aircraft has a square fuselage cross section, with flat panel windows. It is powered by a radial piston engine. Typical are the two wings struts on each side, with their long chord, at least the lower three quarts.