I had a bit of work to get my YI360 camera operational for Mapillary. But I think it is a good camera with very nice and stable quality for Mapillary. When Mapillary finds the time to get this camera operational via their app I dare to say this is one of the best cameras for Mapillary!
if you don’t need/want 360 imagery and prefer higher image quality, then most chinese cameras including yi/mi would work fine. Keep in mind that most of them don’t have gps, so you’d need to follow tutorials on how to sync images with a gpx track.
or you could get a (used) gopro 5/2018 with gps and fairly decent specs