From
what it sounds like to me when messing around with a mid / side EQ, there is the main guitar riff paired with a reverse piano that covers some of the fundamental range of the chords. Then there are strings that play into a higher chord section that is around the 2nd measure of the loop (very sibilant may sound like noise). The strings appear to be really formant sounding, so perhaps he may have layered a group of voices / a choir there as well?
To me it sounds like a lot of his layering is about the timing of when the instruments come in and leave.
Here is the M/S chain that I did if you'd like to hear how I got to my guessed conclusion.
https://instaud.io/ijclet me know to take the link down if it violates some copyright thing, but I think it should be fine.