Mainly for looks, the Handley Page HP42 is probably my favorite propeller plane. It was common on european routes to africa/india in the 1930’s.
Theres some incredibly interesting planes from the propeller age as engineers tried to get as much power as they could from the props. One great example is the Bristol Brabazon, built as part of a large scale avation project to help revitalize Britain post-WWII, but failed due to the changing times. The Youtube channel Mustard has a great video on it.
IndySam took the SR-71, So instead of just saying that again ill link the Ekranoplan, built by the Russians during the cold war to fly to get around cavitation (a boating phenomenon that “boils” water in a vacuum from forcing water to a low pressure state, causing damage to the boat) which was plaguing the development of hydrofoils. Mustard also has a great video on it.