Are there any useful resources for finding devices that don't have surveillance apparatus built in?

I'm still not purchasing a television. The last thing I need is more screen time in my life.

You'd be looking for what's now called a "dumb tv". But those are getting rare, because TVs that can't sell your watch data have to be more expensive to make up for that, and that doesn't sell. Commercial screens are an option, as are computer monitors. Or getting a smart tv and never connecting it to the internet. So far nobody has started shipping TVs with a mobile connection to exfiltrate data, as far as we know. Unlike cars.