This probably isn't a perfect solution. But I have found Payonner to be a very good low KYC place to hold cash. I bought over $100,000 in crypto using their debit card from Crypto.com with 0% fees.︀ I also regularly have payments into Payonner or $40k-100k, over several years and they have︁ never once asked me for anything other than the most basic documentation. I don't think︂ they even have my passport image, just the number. Crypto.com hit me with KYC a︃ few months after the purchases, but after sending them docs I've never heard back, so︄ assume it's sorted.
I can't vouch for it, but AdvCash seems to be one of︅ the best places to move large sums in and out of crypto, on to cards︆ etc.
In the coming months I am going to move most of my liquid assets︇ into crypto, because I see the coming noose of the OECD, IRS, EU etc. I︈ have lots of crypto debit cards I can move assets onto and start spending straight︉ away. The best I've used is Crypto.com, within various limits there are no FX fees,︊ no POS fees and no ATM fees. This year I used their card in Hungary,︋ Serbia, Croatia, Belarus, Moldova, Ukraine and Turkey and they haven't asked anything about that. Other︌ cards have asked me what that is all about. I am going to take my︍ time, because I don't want any alarms going off anywhere. And from here on out︎ I'm going to put my funds into solid brokerage and crypto. I will no longer️ be holding more than 1-2 years living costs in banks, as it's constantly shifting towards not being your money.