For example, the name Dmitry Utkin has apparently been recycled several times to disguise the business interests and connections of the Wagners/Prigozhin, including once using a Russian prison convict who changed his name legally to Dmitry Utkin.
This stuff comes from western intelligence sources, not Russian ones. For instance the linked article was focused on 'proving' Wagner's ties to the Kremlin but contains a plethora of other information/links to sift thru.
Putin Chef's Kisses of Death: Russia's Shadow Army's State-Run Structure Exposed
When I'm only passingly interested in something, I use the CIA controlled Wikipedia for photos, birthdates and basics like that, knowing it may have issues. When people try to settle exacting, detailed controversies with Wikipedia quotes, I usually recommend they read Wiki's entry on Free Republic to see how objective that source is.Thanks for the link. The group photo at your link shows that guy really is big enough, and strange enough to be a bond villain.
I think your source have recently been named as a 'fake news' source but I am not finding the article I read about that. The CIA has a review on Bellingcat on their website, but...I don't wanna download a PDF from the CIA.