Overall 1991-92 (77%) and 1986-87 (78%) were the 4th and 5th lowest snowfall seasons in North America's ski areas as well as being 3rd and 4th highest El Nino seasons. Thus the list of areas above average in those seasons is a short one.
Only Alaska and Arizona were above average in both seasons.
Southern California was very good in 1991-92 but bad in 1986-87.
Taos was above average in 1986-87 but below average in 1991-92.
Whistler was above average in 1991-92 but below average in 1986-87.
Overall the Northeast was close to average in 1986-87 but only far northern Vermont was average or a little better in 1991-92.
The rest of the West was below average or worse in both seasons. Here's the overall region chart I've posted before, with El Nino/La Nina seasons according to the MEI Index marked. The + signs indicate degree of strength.
As noted in the Tahoe thread, Bryan Allegretto of OpenSnow is not yet on the bandwagon that 2015-16 will be a banner year for the Sierra: https://opensnow.com/dailysnow/tahoe . He says the "Blob" of warm water that drove the persistent ridge of the past 2 winters is still there. El Nino is currently around the strength of 1991-92 and perhaps it needs to gets stronger yet to break the ridge down more consistently.
1991-92 was the year of the split jet stream. That's why SoCal, Arizona and Alaska did well and nearly every place in between was below average or worse.