Traditional indian design is more driven by nature and using harmony. We typically find it manifest in both form and function aspects of the designs.
We can see that in building design methodology of vastu shastra using natural forces in design. Also the famous women indian wear called ‘sari’ with natural motifs.
Symmetry and cyclical design elements also are dominant in indian design perhaps driven by its deep spiritual and philosophical background weaved into most of the life choices in traditional India.
Nature, symmetry, cyclical, fractal, harmony are the themes that come to my mind.