There are three types of USB connections: USB-A, USB-B, and USB-C, and you can find all three of them on monitors. While USB-A and USB-C connectors haven't changed shape over the years, there are a few different types of USB-B connectors.
Monitor Ports and USB-C: A Comparison of Display Connections
Why choose a USB-C monitor?
USB Type A vs USB Type C
USB Cables
USB A vs USB C: Full Comparison & Winner - History-Computer
USB-A vs. USB-C What's The Difference? – Charge Cords
StarTech.com USB-C Multiport Video Adapter - Space Gray USB-C
A Visual USB Cable Guide GTIS Power and Communications Systems
Belkin BOOST↑Charge Pro Flex USB-A to USB-C Cable (1m) - Apple
USB-C to USB Adapter - Apple
USB-A vs. USB-C: What's the Difference? + What's Best for You?
Dual Monitor Adapter - USB to HDMI adapter for dual monitors, each capable of mirrored or extended display with resolutions up to 1920x1080 @ 60Hz-all
Plugable USB 3.0 or USB C to HDMI Adapter for Dual Monitors, Universal Video Graphics Adapter for Mac and Windows, Thunderbolt, USB 3.0 or USB-C
USB Port Overview: Differences between USB-A, USB-B & USB-C