I'm headed up there this weekend to backpack into Miter Basin w/Langley climb out of Upper Soldier Lake. From my experiences in past years, NAP will most likely have snow/cornice the last hundred feet or so to the pass. If I recall, I did manage to avoid the cornice and ice on NAP - but I would bring crampons/Ice axe just in case. I watched a YouTube video of a hiker going to Cottonwood Lake #4 last week and OAP had a lot of snow on the north face making it pretty dicey to hike the trail. I've done OAP when we had a very large snow year and I just took the direct route to the pass in the snow/ice using mountaineer tools. If you're going to Langley soon, I'd just take NAP. OAP trail won't be clear of snow until early June. I'll report the conditions later next week when I get back.
