KYB for non-US entities onboarding US financial institutions

Curious if anyone has experience with the specifics of KYB for non-US entities trying to onboard with US financial institutions, particularly in the fintech space. The usual UBOs, articles of incorporation, and address verification are standard, but the variation in documentation requirements across different jurisdictions for, say, a Maltese or Singaporean entity seems to be a recurring point of friction. Are there any common pitfalls or areas where additional due diligence tends to be requested from the US side that might not be immediately obvious?