Why not enumerate it based entirely on features, also toss in what power delivery it's rated at in watts and volts.
USB 3 20Gbit PD 100W 20V
USB 3 20Gbit PD 100W 20V
So they only have to put the speed class and PD or not PD. It would make things so much better.
Alas the standard needs standardised....
Even this is technically incorrect: USB-3 A-type sockets, though backwards compatible for f/m and m/f connecting with USB-2, have 5 more contacts compared to USB-2 type A sockets.
USB-C-3 for the new connector format.
USB-C-2 for some (many) cellphones.
USB-Micro-2 (for many phones).
USB-Mini-2 (older phones)
- Edit -
I changed my mind, the connector is more important than the wire version.