I've seen the pattern with everyone from petty rugpulls, smart contract exploits to Ronin hacker, Do Kwon and the FTX "hacker"
Not sure if anyone has done a study, definitely a task for a talented journalist like yourself 😉
https://cointelegraph.com/news/ftx-funds-on-the-move-as-thief-converts-thousands-of-eth-into-bitcoin