You can buy one of these if you want to convert it to wireless; 8Bitdo G Bros. Wireless Adapter... https://www.amazon.co.uk/dp/B07JLF9PVG?ref=yo_pop_ma_swf
Don't suppose if those work with an a to c adapter in portable mode?
Exactly it's a proper GC controller with the legacy plug. The Hori etc are USB-A to plug into the dock.
So these do not come with a USB-c adaptor :/
Yer I couldn't find this anywhere else and was out of stock on the Nintendo site earlier. A bit disappointing that it's compatibility is limited on the Switch due to it's lack of some buttons.