All the ones that would have put former Administrations in jail before the statutes of limitations ran out :-D Then again, those details will likely remain redacted when unsealed, LOL!
From the small amount that was exposed in the past it was FAR from anything of real interest while the government was saying they couldn't release the document as it may destabilize the economy. That was 100% BS. My hunch is that the more heavily redacted stuff was the stuff that showed the government was as guilty as the guy knocking off the corner liquor store....AKA - "The Smoking Gun."