Do the Beats Solo 3’s support Dolby Atmos on Apple TV 4K? If so, how do I ensure it’s on?

For video or music content?

Do the Beats Solo 3’s support Dolby Atmos on Apple TV 4K? If so, how do I ensure it’s on?

Apple TV will show if it is available. Dolby Atmos/Spatial Audio will show as an option in Apple TV Control Center’s headphones section. Beats Solo 3 does not support head tracking, though — moving your head won’t change the sound ‘direction’, unlike modern AirPods.

I have been grappling with ways on how to view content in Dolby Atmos at home.

Besides headphones, there’s also Dolby Atmos soundbars and Dolby Atmos AV receivers. Set up Dolby Atmos on Apple TV with a soundbar or AV receiver - Apple Support

I am about 95% sure that the Sony WH-1000XM4’s do not support Dolby Atmos (i’d preferred if someone confirmed that)

Not directly connected to Apple TV, anyway. Paired bluetooth headphones will get stereo if they’re not on Apple’s Atmos compatibility list. Connecting to other devices (e.g. Sony TV or Sony audio system), wired or wireless, might give different capabilities. But I’m not familiar with that model headphone.

but now my biggest concern is finding out if the Beats Solo 3’s do.

Apple says: Any Apple or Beats Bluetooth headphone that is Dolby Atmos compatible, is suitable for listening to Dolby Atmos on your Apple TV 4K. About Spatial Audio with Dolby Atmos in Apple Music - Apple Support

For reference I am playing a movie on Apple TV+ that supports Dolby Atmos (Blade Runner) — nothing shows up.

I’m not seeing listed that this movie has Dolby Atmos from your source. ‘Only’ Dolby Vision. Not sure if the “temporarily free with Apple TV+” content is somehow limited in audio. Weird; I thought this title should have both Dolby Vision and Dolby Atmos. ⁉️

It’s not called Dolby Atmos in Apple world.

It is called Spatial Audio.

The Beats headphones you have support Spatial Audio.

Yes.

under the headphones settings make sure Spatial Audio is on.