Q: utility skills and offhand for leveling...
Since you prefer a/m main you would just use gs to get away I guess. Carry a lb & rifle too and swap gs for range if you think you’ll need it. Signets & shouts are good utility for leveling.
What I would do leveling usually worked out to something like fill adrenaline if empty, bunch up as many npcs as i could pull into 1 group, pindown (penetrates), LBow f1, arcing arrow, smoldering arrow, swap to gsword, whirl thru, and finish off what’s left.