#9 is probably the most interesting. The orb-ish uap appears to go underwater? And around 2.5 minutes there are two of them splitting off into different directions
There's a lot of people who would profit off operating an unknown aircraft in this region. After seeing the effort cartels are willing to put into craft like narco subs, it wouldn't surprise me to see them doing something similar with obscure/idiosyncratic cargo drone designs.