I understand your idea for a wiki.
The help page is at https://help.mapillary.com/hc/en-us while the old wiki User Guide is no longer maintained but you can see it at https://github.com/mapillary/UserGuide
360 cameras are still a new thing and I expect will improve quite fast. I have the LG 360 I got just to play with but the Mapillary app android version does not support it.