Caporegime
PD and GaN are 2 totally different things.
One is a charging standard, the other is materiel that replaces Silicone in chargers for better efficiency.
So yeah, PD GaN chargers are a thing, not mutually exclusive.
It's the handshake between your devices which is the issue. Thanks to the mess that is USB-C and it's many standards.
I have a USB-C 3.2 Gen 2x2, which I think is the latest one?