There are very limited possibilities as to what these drones are. The only countries on Earth that could conceivably produce them are the US and China. I don't think Russia could, as their military is designed to be defensive like Japan and Israel's are. Russia can't project power outside of the Eurasian sphere much less have advanced drones harassing US ships on the other side of the world. Who's #4, India? Yeah no, they buy all their tech from the US and Russia and have very little R&D.
The only countries with the ability to do long-distance force-projection are the US, China, France, and maaaaybe UK. It ain't the last two.
It's either the US or China, or...something else. Blackrock Corp has the world's third-biggest GDP but no military wing that I know of.
China is having its own financial struggles, but could have secrets we don't know about. I'm going to say it seems a lot more likely the US itself might be behind the UAPs. Congress is sniffing around and the deep Pentagon cronies don't want to be publicly outed on what level of technology we actually have at this point.