I recently received a flexible (soft) cabled endoscope camera which claimed to be 1080P which I bought from AliExpress, and so I tried it out. I found that it only supports up to 1280x960 resolution. I would have been fine with that even though it is not the advertised 1080P, however I also found that it was locking up, though my Logitech camera was working fine (I run multicam on the Pi). So I tried another official Raspberry Pi power supply and unplugged all the other USB devices, but still found that the streams locked up after several minutes. When I put my original nozzlecam back on (with the rigid cable) it was fine, so I'm thinking the AliExpress endoscope cam was a bust, but it was only 12 bucks. I will continue to keep an eye out for a flexible cable endoscope camera which may be suitable as a nozzle camera, but for now I'm still using the original.
Update 9/1/2022: The seller of the first camera I bought seems convinced it is 1080P (big surprise) and told me to download their drivers which is not worth my time since it will not work with the Pi anyway at the correct resolution (and locks up). I may take it apart though and if I do, will post some pics. I bought another endoscope camera which is unfortunately a rigid cable version (but I have plans to change that if it works). I have a bit more confidence in the brand of the new camera though, since I already own one of their endoscope cameras (a standalone version) and that seems to be pretty decent. I will review the new endoscope when I get it, and update on how to set it up with the Pi.