Just some harmless idle thoughts here, so don't get too worked up.
By form of photography I mean the genre and the intent ... not the gear, and not the subject. Some forms would include portraiture, sports, street, landscape, family, photojournalism, etc. I'm excluding anything that is not specifically framed and shot by a human - things like security cameras, satellite cameras, etc.
The lowest form that comes to mind is the hand-held selfie (and yes, I've shot some of those myself). Any other opinions?