I wonder who the other passengers were. Probably the kind of people who would possibly keep Wagner resistance up or have too much influence and are considered a liability in a takeover.
Or maybe Prigozhins family to strike fear into Wagner troops about their family if they don't cooperate.
Or, since there were reports that Wagner troops are scrambling Prigozhin didn't join the flight as a ruse.
Well the last one might be a reach and entering bullshit conspiracy theories but in general I'd like to know who was on that plane.