The data isn't available because it's only for specific media outlets to report on. They would hate to incriminate anyone who isn't Putin by accident.
Look at "Who supports our work"
It has Soros' fingerprints all over it. He's at it again: attacking nationalism (Russia, far-right parties) and promoting globalism.
The whole operation isn't exposing anything we don't know: rich people are rich and use whatever means at their disposal to keep rich. In fact, this is a media operation more than anything to villainize Putin and anyone associated with him. The truth is, pretty much every nation and its leaders are guilty of this.