Former Deputy Director of the Department of Administrative and Legislative Work in the Ministry of Energy, Sergey Vladimirovich Abyshev, is most likely Source 1 and Source 2 is Ivan Vorontsov confirmed, great work @ChuckRossDC! https://twitter.com/ChuckRossDC/status/1291780347496140802
Abyshev was Chairman of the City Duma and Vice Mayor of Nizhny Novgorod. This matches Source 1 redactions, plus his eventual move to Moscow. https://ru.m.wikipedia.org/wiki/%D0%90%D0%B1%D1%8B%D1%88%D0%B5%D0%B2,_%D0%A1%D0%B5%D1%80%D0%B3%D0%B5%D0%B9_%D0%92%D0%BB%D0%B0%D0%B4%D0%B8%D0%BC%D0%B8%D1%80%D0%BE%D0%B2%D0%B8%D1%87