I don't know who Boris Johnson got on this list. He's Ukraine's biggest cheerleader.
Boris is a weird one, he actively kow-towed to the Russians and pushed Brexit, then made Evgeny Lebedev a lord, ( Evgeny's father is a KGB guy and an officer in the FSB )
He famously went off grid to meet Russians immediately after a NATO meeting.
So he's up to his greedy little eyballs in Russian money, then does an about face when Russia invades Ukraine.
At best he's just a wishy washy politician who craves power at any cost. At worst he's in deep kompromat to the FSB, and will turn on a sixpence when it suits him.
Fun fact: Lebedev's dog is called Boris.