Most of my videos are filmed using one or two GoPros, a GoPro hero session 5 for the headmount, and a GoPro hero session 4 for the overview shot. Unfortunately, GoPro has stopped selling the GoPro session cameras, which is a pity. There is another camera with a similar form factor available, the Polaroid Cube, which I’ve seen used for IPSC, but I have no experience with it.
I originally purchased GoPros to use their wifi remote to start and stop recording on multiple cameras. However, I don’t use that all that much any more.