Deripaska was connected to Paul Manfort:
https://themoscowproject.org/players/olegderipaska/index.html
The information Hunter might have tried to sell might have been obtained from the Democratic Party.
“list of elites of similar rank in Russia”
From 2018:
“The White House releases a list of Russian government officials and Russian oligarchs connected to Vladimir Putin. The document, which was compiled by the Treasury Department...listed every senior official within the Kremlin and oligarchs with a net worth of $1 billion or more.”
https://themoscowproject.org/players/olegderipaska/index.html