Indian cities have multiple aesthetics. As do all cities, and human settlements of varied sizes all around the world. This has been true right through history.
However Indian cities have a clear demarcation in terms of the urban aesthetics when looked at within the time frame of the last century.
The big four metros, all cities in existence for at least 400 years have an evolved sense of architecture and urban aesthetic that spans from the Mughal times to the British Raj. Each city got its own distinct version of style and look. However this sense of aesthetic took a nosedive post-Independence.
All of a sudden, for every great piece of architecture, there were 100 examples of very banal, characterless buildings. Entire sections of cities, or even entire small cities grew up with no sense of architectural character and style.