Thanks again.
I've swapped the adapters over. So now with a USB-C port, I can take my pick from any third party fast charger on Amazon should the need arise in future.
Well, not
any, unless that refers to a charger which accepts USB PD or Quick Charge 4 input.
Quick Charge and USB PD are still different standards, and although QC 4 will be compatible with USB PD protocols, older versions are not, so a charger purchased now or in the near future won't necessarily take advantage of the greater headroom PD offers, though there is backward compatibility to fall upon.
QC gained a foothold because it attained a level of critical mass before USB PD did, and is still more prevalent, though the latter is building steam.
In a perfect world, they will all eventually adopt USB PD, because it's non-proprietary and defined by the USB IF, as well as having the greatest headroom, but with things like this, it's not purely based on technology.
Some, like Apple, have planted their flag in the USB PD camp, but there are still proprietary fast charging standards being pushed, by Samsung, Motorola, Oppo, Huawei and others, in addition to Qualcomm.
Wireless chargers have relative modest power needs, and don't sell for much money, so whatever is easily attainable and cheap will probably win out, which bodes well for PD. There are still a lot of chargers on the market that aren't Qi-certified, because their manufacturers haven't joined the WPC, or paid to have the certification process done.