users can get a good level of anonymity with privacy tools like mixers and CoinJoin, and if they also use p2p services
That's not going to help OP if he's looking for a "wallet audit". All those transactions will raise questions. You can't have privacy and show your entire wallet at the same time.
So just to be clear, this is a wallet
funds audit, not a
source code audit, right?
Why would anyone want to do that? It's not like they are businesses or anything anything, with financial compliance obligations.