Steam Remote play
Steam Remote play
Alternatively, you can use a Steam Link or connect to another PC that has Steam installed. I don't know of any TVs that come with an app for Steam.
It performs reasonably on my Apple TV, though responsiveness isn’t quite ideal. I believe the issue lies with the screen rather than the device itself—it’s a budget model, so lag probably stems from the lack of a low-latency game mode, which is present but poorly executed. It’s quite bothersome because my connection is perfect, yet I still can’t feel the control connection. It does work for slower games, which gives me some hope.
Thanks for the research, but it's really tough to utilize the great features they offer.