What about 2.4 GHz based wireless? I know logitech has that tech but I haven't looked into audio latency since I used wired anyways, but I have been curious about it
I have Logitech G535. And I play osu!. I'm pretty sure there is latency but I couldn't feel any difference between them and headphones connected to DAC. So if there's any latency there, it is definitely less than 5ms.