We bought a new tv two years ago and I spent probably a week researching to find the least-smart set I could.

The best option is display only units made for businesses, like what they use for restaurant menus, but those are usually twice the price of normal tvs because they're not app subsidized like smart tvs are.

What I ended up going with was Hisense. They ship with Google TV, but it's disabled by default. On first power up, it asks if you want to activate the Google TV features, and you can just say no. The thing then runs like a basic display.

I have stopped using TV sets more than a decade ago.

Instead of a TV set, I use a very big monitor, which is connected to a mini-PC (an old Intel NUC with Linux), which also has a TV tuner and an infrared remote control receiver. Besides just showing a TV channel, a mini-PC can also record it and it can play any other kind of movie or music files, or it can stream some video from the Internet.

I have an older TCL TV that I've never connected to the internet. Of course, that doesn't prevent it from finding open wifi access points and exfiltrating data without my consent. Based on this (really marvelous) reporting from Gamers Nexus, I probably need to double-check what is actually happening.

BTW corporate meeting rooms with smart TVs...shouldn't have them.

Sceptre still makes some, Walmart carries many of their models.

Possibly use a projector instead?

I've been searching for one hour, and the only truly safe thing is an HTPC linked to an OS-free commercial display like these large VAs from ViewSonic: https://www.viewsonic.com/global/products/commercial-display... (goes from 45" to 100").