They’re not hugely commonplace yet, but video cards with USB-C ports are available without being super specialized equipment.
Nvidia had some on the 2000 series GPUs but dropped them with the 3000 series. This was part of the VirtualLink system which failed, but they’re otherwise fully functional.
Some of AMD’s newest cards have USB-C ports on them now: https://www.amd.com/en/products/graphics/amd-radeon-rx-7900x...