I have an oped in Mint today with V Ananthanageswaran and Mahesh Yagnaraman where we highlight the important differences between regular venture capital investing and development impact investing. It's an abridged version of the longer paper here.
Update 1 (09.08.2022)
The report of Impact Investors Council on impact investing trends in India in 2021 is here. It has an Annexure II which lists out various impact investment options.