Credit goes to Hirose for the idea on USB Micro B, as they hint at it their ZX catalogue [1], but logically everything on USB devices is normally a receptacle_ so custom cables really is the only use for a PCB mount _plug_. If you download the catalogue and scroll to page 3 you can see example 3D renders on the second half of that page that might make it a bit more obvious what I was describing.

In actual fact for USB C you'd probably end up having to mount all connectors in the cables on tiny PCBs regardless, because of the potential requirements for signal conditioning and electronic marking ICs unique to USB C implementations. With so many pins on usb C without a doubt you'd need these tiny PCBs to be double sided to get all the traces to the PCB edge, and I wouldn't be surprised if some commercial usb C leads have PCBs with 4 layers.

I've only designed PCBs myself for the traditional USB PCB mount USB A plug (an Amphenol part) and Micro B plugs (Hirose ZX series parts) as these are very simple pinouts and are perfectly doable for a hobbyist I'd say if you want custom cabling. USB C looks significantly more complex and an in-cable PCB interface is the only way to go for that level of complexity.

[1] https://www.hirose.com/product/en/products/ZX/