Charitably, you might be using a different definition of corruption than most of the world uses. Even if we limit ourselves to only a narrow definition of only political corruption, the abuse of government power for private gain, most of what I listed would still be (sometimes literally) textbook examples of it. The revolving door, dark money, "kids for cash", no-bid contracts, Teapot Dome, these are examples of how we've seen bribery and cronyism play out in the Untied States. Voter suppression for example is a form of electoral corruption. While you're welcome to play at semantics or choose your own definitions for what you feel is and isn't corruption, claiming that "none of the things" listed were "clearly corrupt" is simply false.
I think we'd agree that a worker deleting a database doesn't have to be corruption, but that also doesn't mean it can never be an act of corruption either. I'm not talking about conjecture, just documented history, some of it recent. There are people in prison right now for their roles in it and many others who should have been, or who should still be, locked up for it, but who have escaped justice because of corruption.
It's difficult to imagine what "real ones" would even look like to you personally, but be assured that to the rest of us the US has a very long and well documented history of real corruption.