I have a 43-inch Insignia N10 that works great in exactly that role. Dumb TV with HDMI inputs, audio outputs, and that's about it. Best Buy's in-house brand, it was like 120 bucks about a year ago, when my Vizio TV from 2003 finally died in a way I couldn't fix :(
The built-in speakers aren't great, definitely recommend hooking it up to something else.
The top issue from this similar joke repo I feel sums up the entire industry right now: https://github.com/rhettlunn/is-odd-ai