I have a Samsung smart tv series 5. I can add that tv to the Smartthings app.
But when I try to link Google Home with Smartthings, Google Home just sees the TV as a switch.
Please see the images:
If you’re looking for help with Samsung brand appliances, vacuums, or televisions, including how they work with the “SmartThings (Samsung Connect)” app, see the official support forum, which includes assistance from Samsung staff:
At the time of this writing you had to go to the landing page, and then click on the “get help“ link in the upper left. That would then take you to the page where you could select the forum for appliances or for televisions.