That wouldn't have any effect on the money supply unless the other persons actually spend the money they borrowed, so most people wouldn't call that money creat

That wouldn't have any effect on the money supply unless the other persons actually spend the money they borrowed, so most people wouldn't call that money creation. P.S. usually borrowers spend the money they borrow as quickly as possible because they don't want to make interest payments just so it can sit in an account. That's not where the slack in bank deposits come from. Instead, it comes from people who are saving money.