I'm looking for a good long list off the bat, I'm thinking: banner towingcrop sprayingairline pilotphotography - exactly what would this be? taking photographers up or mounting camera equipment to the plane to take photos, etc.charter pilot - all types, bush flying, sightseeing, etc.. to private jets, turboprops, etcflight instructor. others?

law enforcement (surveillance, transportation, speed enforcement)Fire fighting (both actual water drops and spotters)Air ambulance

MilitaryFreightOil and gas service (mostly rotary)

photography - exactly what would this be? taking photographers up or mounting camera equipment to the plane to take photos, etc.

Yup. The Real Estate business pays decently for these services and is a big user of aerial photography. A lot of the things you mentioned are part 135 operations. Airlines of course are 121. There are big differences in regulations between 91, 135, and 121.

Forestry and Agriculture inspections.Test pilot.Surveillance pilot.non-military government pilot (NOAA hurricane hunters, corporate pilot, etc)

Ferry pilotSkydive operations pilot(mostly Twotters,Caravans,KingAirs)

commercial (airliner and smaller, including line pilots and chiefs etc)air taxitest pilotferry pilotinstructordelivery/air testcargo opshelicopter and fixed wing installation inspectionmilitarypolicemedevac/air ambulance/flying doctorair/sea/mountain rescuedrone/UAV pilottarget towercivil patrolforestry/logginghelicopter skycranesaerial surveillance/photography/movie camera shipfirefightingstunt pilotracing pilottraffic controlmedia (news choppers etc)sports (glider towing, aerobatic, skydiving etc)cropdusting/agriculturalbanner towingresearch (i.e. marine, antarctic etc)meteorologicalballoon safari pilotdirigible/airship pilot (for low vibration filming applications etc)safari/wildlife warden probably some others too. Al