Which banks use XRP?

Which banks, precisely, are utilizing the cryptocurrency XRP in their financial operations? I'm particularly interested in knowing which major institutions have adopted this digital asset for cross-border payments, remittances, or any other financial services. Could you provide a comprehensive list of these banks, along with any relevant details about how they are integrating XRP into their systems? Additionally, I'm curious to know if there are any specific regions or countries where the adoption of XRP by banks is more prevalent. Could you shed some light on this aspect as well?