Ignore me... just adding the Moto Guzzi V7III Carbon to the list. Gorgeous, seemingly very rideable and a seat height of just 770mm. An airhead too :)
So...
Larger engines - all stunning bikes and seemingly not too large or demanding:
Ducati Scrambler Icon
Triumph Street Twin
Yamaha MT-07
Moto Guzzi V7III Carbon
Smaller engines:
Honda CMX500 Rebel (a nice low seat due to the semi-bobber styling)
Honda CB500X (a genuine all-purpose bike)
Honda CB500R (very rideable, and the benchmark in this class)