We have been using an 8010-G for root, hot +1 or t2 passes - , say up to 8-10 mm fill.
Used to use 8010 for the complete fill, but switched to a gas shielded FCAW for fill and cap because of the speed. Wall thickness was up to 24 mm (just shy of an inch)
Combination of 8010 + E71T-1 always gave over 90 ksi tensile, plus very good charpy results.
Just a tad uncomfortable using a 70 class wire for guarenteed 90 ksi results, so for 90 ksi pipe we switched to a higher strength wire for fill and cap - Esab 101-H4M. It does have a bit of nickle in it, and also has a very low hydrogen count - allowed the preheat requirment with 8010 to be reduced quite a bit. It worked very well - not quite as nice to run in the overhead position, but the repair rate did not change, and all the welds passed RT.