I think Sony "commercial displays" are the best in this regard. As there are various things to avoid with modern TVs, and you can avoid them all with the Sony commercial displays.
There is RF from the remote (e.g. wi-fi, bluetooth). The Sony's have an old-school infrared remote.
There is bluetooth and wi-fi from the TV. You can disable both of these in the settings of the Sonys.
There is LED backlight flicker. This can also be disabled by turning off the fancy motion enhancement settings.
The one downside of a commercial display is that it has no built-in TV tuner. So you can't just get over the air broadcasts or plug a cable connection into it. But it can run apps (via ethernet), you can plug in a cable box, Blu-ray player, DVD player, Roku streaming box... anything that has an HDMI output. They may no longer come with stands, although not too long ago they had models with stands.
I get these Sony's from B&H Photo (online). They come in a variety of sizes, 32", 43", 50", and higher. Probably the higher sizes are worse for us, I've never gone above 50". There is also choice of LCD panel, VA or IPS. IPS has wider viewing angles (if multiple people are watching from around a room), while VA panels have more contrast (as long as you aren't off to an angle while watching).
This is about as "low EMF" as you can get in a current TV.
Example model.
https://www.bhphotovideo.com/c/product/1796999-REG/sony_fw_43ez20l_bravia_ez20l_43_class.html