keep in mind;
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there are 2 kinds of atmos, lossless/HD TRUEHD, and EAC3/DOLBY DIGITAL+
streaming providers use dolby digital+atmos, this is the kind that works on smart tvs.
truehd+atmos, comes from 4k/blurays and does not direct play or pass through any known smart tvs -
there are several different profiles (or flavors) of dolby vision, not all devices/tvs are compatible with all the different profiles.
see also @ Plex, 4k, transcoding, and you for a ton more 4k info and discussion