When is the last time you purchased a camera and how much did you spend? I am happy with the wireless performance of my Sony A7 SIII. I kind of splurged on it as my once in every 2 decades camera so I don't have anything to compare to besides connectivity first cameras (Drone).

I have a Sony A7 from 2019. I also tried a couple of other newer cameras from Nikon and one from Fujitsu.