Whatever they are, they ain’t from other Galaxies. I’m not for a minute saying they aren’t out there, they are, but, the laws of physics apply across the whole universe and the distances are just too great, even if they could travel close to the speed of light, which they can’t. Impossible.
These appear to simply be drones from here. Nobody seems to be claiming them. If it was some sort of government or military exercise, then I doubt they're gonna fly them over New Jersey, unless they're being used to detect something they don't want the public to know about.
It could simply be a group of people causing it. Some dickhead with a single drone managed to close down Gatwick airport. I've no doubt a handful of people could do the same flying drones over New Jersey. I'd probably put my money on that.
i kind of disagree with part of your post though..
there could be civilisations out there that took a complete different path of technology and know how manipulate the "laws of physics", or physics as we understand them in 2024 anyway.
Whether people do or dont belive the legitimacy of Bob Lazar, the guy who said he worked back engineering UFOs, he said 35 years ago that these crafts operate by some manipulation of gravitational waves. The odd part is the science community often claimed there's no such thing as gravitational waves, until it was proven about 9 years ago.
The point is, we're not fully clued up on physics if still discovering things. It's completely plausible there's civilisations out there that took a path of invention that could work with physics in a way we cannot.
Even if there is, it doesn't mean they're using it to visit earth.