Probably look to secondhand commercial stuff, anything with ONVIF support should be fine.
Picked up some domed outdoor Cisco IP6630s awhile back off eBay for cheap and while not the best image wise they’re built like tanks AND they give you full root access lol
What? Do you mean to get the pop up on screen? That’s still a simple long press on the power button. I just did it now on my Pixel.
Long power + Vol Up does a hard reboot directly without calling the power menu