Persistent KYC friction for non-standard entity types

Anyone else still hitting significant roadblocks with KYC/KYB when dealing with certain entity structures for payment processors or even some brokers? I'm not talking about basic LLCs or individual accounts, but things like non-profit foundations with complex beneficiary structures, or even just partnerships where a partner is another holding company. It feels like many of these onboarding systems are still built for the simplest cases, and anything outside that becomes a multi-week back-and-forth, requiring certified translations of documents they then question the validity of. It's an operational drag.