It doesn't matter, it's all of them.
Hilariously enough, the sort of TVs used to display advertising in public places[1] don't have any of this annoying spy/adware installed.
True, but they're MUCH more expensive. For example, the lowest-end 43" this company sells for a little over $2000; you can find ones on Amazon for a tenth the price. Yes, a lot of that is the industrial quality, but some of it is the spy/adware subsidization.