USB sound cards do not work on the Xbox One (S) X. You can use USB sound cards on the PS4, but not all of them work properly.
I use the SoundblasterX G1 or G5 on the PS4 Pro.

On the One X, I use the Audioengine D1 for high-impedance headphones because this DAC has a Toslink input.

You can plug the MMX300 directly into the controller and it gets loud enough thanks to its 32 ohms. It comes with two cable lengths. There is also Dolby Athmos Headphone in a few games, but you have to pay for it.

Recommend the Astro A40 as the only headset where you can hear differences in altitude.

Perfect choice, just remember that if you take a stereo headset you might have to use a Soundblaster from Creative (I can personally recommend) because otherwise you have relatively little boost and everything might sound very quiet.

Kind regards
izzy

Astro headsets are just overpriced and cheaply made.
Any HyperX Cloud sounds better than the Astros, Turtlebeaches, etc.

Have you been playing surround or stereo so far? If only stereo and you want to stay with 2.0, I can fully recommend the mmx 300. I use it myself with a Sennheiser GSX 1000 on a PC - excellent! Cheers

Get the Beyerdynamic MMX 300 2nd gen.