Of course. Get hikvision. Or Annke, which is a oem reseller and a bit cheaper. No cloud required, you get a proper web interface for configuration and two (configurable) rtsp streams.

If you want to be 100% sure they can not phone home, get a managed switch and put them on a separate vlan together with your nvr.

And please don’t go the wifi route. It’s just crap for video surveillance. Get some cameras with Ethernet and POE, that way it’s still just one cable, but no more dropped frames.

I got generic reolink ipcams and put them on their own VLAN, then put firewall rules on my router to block them but let my NVR through. I plugged them all into an unmanaged POE switch which then goes up to my managed switch which handles the VLANs

The cameras have ONVIF/RTSP so it'll work with BlueIris or other NVR software

Might be easiest to hack it together yourself with an rpi and a camera? Seriously, I don't think you can really trust any manufacturer of an Internet (wifi) capable camera device to not try to gather sweet sweet data.

You want Reolink cameras.

4 years later and I'm still super happy about my 4K PoE Amcrest cameras. This is the brand I would recommend!

There is openipc which is an alternative firmware for cameras with a specific chipset; fully open source but finding the right cameras is as rare as finding gold; it would be a great choice though; fuck i miss wyze cam v2s.