I've talked to some more guys, since getting interested in this route, and it looks like basically all the couloirs, all 3-4 of them, from just right of the Hogsback to the one you indicate above, are all variations of DKH, and even numbered from 1-X, depending on who you talk to.
I just got my copy of Oregon High, and it lists this route as "East Crater Wall" route, the next left being "Flying Buttress," and with the two couloirs between it and Pearly Gates being two variations of DKH.
"So I was sitting in my cubicle today, and I realized, ever since I started working, every single day of my life has been worse than the day before it. So that means that every single day that you see me, that's on the worst day of my life."
--Peter Gibbons (Office Space)