WHAT’S THE DIFFERENCE BETWEEN USB-C, THUNDERBOLT 3, THUNDERBOLT 4, AND USB4?

 https://eshop.macsales.com/blog/74922-difference-usb-c-thunderbolt-usb4/

USB-C is a connection type.  USB-C is not Thunderbolt 3, Thunderbolt 4, or USB-4. It is only the connection that those technologies use