Xfinity RF remote feature for what TV Brands?

Really liking the xfinity RF remote , how it controls X1 box without being line of sight with X1 box,  Asking what TV brands the remote will also control without line of sight, using RF like X1 box does. Does xfinity publish a list of TV brands that accept RF signal from its remotes?

Main reason asking is xfinity box does not control volume/muting of it, only does thru the TV.  Hoping the box will do so someday!  Most tv's are infrared remotes you need to point or be in line of sight to mute the noisy commercials etc.  We're TV shopping and I want one that has RF type remote sensor and not spend large for it ideally.  Thanks in advance.