It wont be a popular answer here but Facebook Pay now Meta Pay is a great product. It is instant, as in, you can send someone standing in front of an ATM money, and they can pull the money out seconds later. Not pending, but completed deposits. For free.
It is the "it just works" way to move money between peoples debit cards in the US. It is rock solid, a large network of us use it all the time, and it is significantly more frictionless than Paypal/Venmo/Cashapp/Zelle when you already talk on Messenger. 4 clicks and the money appears.