There is no better, Atmos and DTS:X are equal and both are necessary. I would think any surround processor or AVR you buy will have both Atmos and DTS:X. Auro 3D is the odd one, I haven't seen any media using it but maybe it is used for things I don't do like gaming or concert videos.
Netflix uses Dolby Atmos, I haven't seen the DTS display on anything I have streamed from them, I don't know what the other streaming services use. Some Blu-ray movies have DTS-HD Master Audio and not Atmos soundtracks.
DTS Neural:X uses all speakers in a DTS:X system for an immersive audio experience by placing sound at different points in the soundfield. DTS Neural:X does not work with any Dolby encoded material like Dolby Digital Plus, a common streaming format.
Dolby Surround upmixes stereo, 5.1 and 7.1 material to take full advantage of all speakers in a Dolby Atmos system.