As to what these are: they are clearly something complying with the FAR on dusk to dawn lighting, it's going to be some disappointing, boring outcome like dominos pizza delivery drones.

https://www.ecfr.gov/current/title-14/chapter-I/subchapter-F...

Half the videos I saw were people noticing a commercial aircraft with landing lights on. I saw a bell 412 with some terrain mapping sensors mounted on it hovering in a pattern around my neighborhood earlier in the year and it turned out to be scanning for the power company, a new way of checking the lines. I'll be far more interested in a UAP that doesn't follow our dusk to dawn lighting rules.