i have no idea what it is called, but the way i do it is:
2 opposite centers
2x1 center blocks for the other 4 centers
put the opposite centers on U and D
use only R2, F2, L2, B2, Uw and Dw to create pairs.
once you make a pair, store it in U or D
so you just turn Uw and Dw as you need to create pairs, not really caring about where the 2x1 center blocks go as long as you dont break them up
then once you fill U and D with completed pairs, build the last 4 centers using R2, F2, L2, B2, Uw and Dw, so basically just not affecting the completed pairs. then you can use a 2 at a time or even a 4 at a time edge pairing method to do the last edges, and just make sure not to affect the centers during those last pairs