Who are the 4 diplomats who helped India get 100% consensus on Delhi Declaration?

Four Indian diplomats Abhay Thakur, Ashish Sinha, Nagaraj Naidu Kakanur and Eenam Gambhir held 300 bilateral meetings and circulated 15 drafts with their counterparts to reach 100% consensus on the G20 New Delhi Leaders' Summit Declaration. While Additional Secretary Abhay Thakur, is the Sous-Sherpa, Enam and Nagaraj are currently G20 joint secretaries. Ashish Sinha is a 2005 batch IFS officer.