First clip, Bristol. Small Jet. I see wings and tail when zoomed and filtered. Maybe TARANIS Drone.

Clip 2, Arizona. Unable to analyse.

Clip 3, Helicopter pilot footage. 100% UFO

Clip 4, Puerto Rico coast guard 100% UFO

Clip 5, Jet Pilot , 100% UFO

Cannot comment on non video accounts.

Two UFOs seen flying in Arizona, maybe Arizona Helicopter Adventures or something like that.

I agree with the small plane in the sighting from the plane window.

The jet pilot one looks fast and possibly the real Macoy.

The Puerto Rico and the other helicopter sightings in thermal and IR are possibly real ufo's too. My knowledge is lacking in those areas.

The one with the two white objects cruising along between the mountain are possibly tour helicopters too. They were filmed near Hoover Dam, which is a big tourist area.

I think the analysis of the first video is probably right too, though a closer range view would confirm its status as a drone. I agree with the helicopter interpretation for the Arizona footage - similarly we have level flight and the (based on background research) known presence of helicopter tourist flights. I'm also inclined to agree that the thermal footage videos show something unusual: clearly the footage appear to be genuine visual records from a specialist camera system with on screen information and the unidentified object being followed by the camera don't appear either to be identifiable terrestrial craft or objects on the ground being mistaken for airborne vehicles (eg. such as in the case of the Mexican border patrol aircraft's FLIR footage of oil wells on the sea which were interpreted by many as glowing UFOs).