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@reidrac USB-A doesn't do any type of negotiation and simply charges with 2.5W/5V.
PD (power delivery) requires a chip in the device: When you charge with USB-C to USB-C and the charger, cable and end-device support PD they talk to each other and negotiate how much power there can be. Many cheap products from China however simply switched the micro-usb with an usb-c plug and didn't add the DP chip to save costs. Those don't charge at all with a modern power supply/charger. Hence the question.
@reidrac Almost all serious products support PD but since USB-C is mandatory in the EU, lots of sneaky companies just add the lesser version of the plug. It's annoying because there's no “stupid" (chip-less) charger in my household anymore. That's why I'm trying to avoid giving money to these types of companies.