If you like how the fuzzy skin modifier looks, you could use that. You’d have to import both the NB_V2-Smooth and NB_V2-Blank into prusaslicer or whatever you use, merge both STLs into an object if you have to, move the blank parts forward and up until there isn’t a gap between it and the main body on any edges (you can also check the sliced view cross section to check for any voids), then add the fuzzy skin modifier to the blank parts. When it slices, the fuzzy blanks get merged into the main body as a solid object. Tweak the fuzzy parameters until it looks textured to your liking.
If you want the texture to be inset into the body instead of higher than the surrounding surface, it’s even easier. You can use NB_V2-Blank, click “Paint on Fuzzy Skin” in prusa slicer, and then click the inset areas to highlight them and it’ll add fuzzy skin there.
It’s not exactly like the texture that you want but it’s in a similar direction.
It does support vp9 and h265, I believe DTS-HD as well but I think that’s only for if you use eARC (I only use optical so I have everything convert to AC3). AV1 is not supported afaik, but I have my server do the conversion in realtime with quicksync and serve up h264 or h265.