How would you go about creating a similar texture to this in photoshop?

you are reading way too much into that. it's clearly mirrored, but that's about it. i can see what you're talking about if i look for it, but the fact that i have to look for it and it isn't instant suggests you're looking too much into it. i was able to recreate something pretty similar in about 5 minutes:

1. pick an arbitrary background colour: purple
2. make an oval of another arbitrary colour (pink) - gaussian blurr it by 50px or so
3. if you're feeling particularly artsy, grab the smudge tool and mess it up so it isn't so uniform.
4. mess with some colour overlays - i added a light blue via gradient overlay
5. make some lighting layers - low opacity black, brushe arbitrarily. set to overlay.
6. repeat step 5, brush arbitrarily, gives realistic lighting, play with blending modes.
7. add clouds filter / then difference clouds filter. set to overlay, low opacity, i used 10%
8. copy merged, double canvas, paste, flip horizontally - infinite repeat pattern

the main thing to focus on here is it isn't even a texture. it's a fe things in play:

-overlay lighting layers
- noise layer
- grunge brushes
- the clouds / smudge tool will give it a non-uniform feeling.

see the result:



obviously not identical, but it's not supposed to be, it's just supposed to show each piece at work.