Keqing! Well I have a variety of 5 stars but my main team for exploration is Keqing Chongyun Zhongli Bennett.
For spiral abyss its Ayaka Freeze and Eula Superconduct ^^
As support electro is a good element, but I play Fischl and Beidou as sub dps in my keqing team. Beidou for ult damage and c6 shred, Fischl on the other hand for c6's synergy with Keqing's fast basic attacks triggering more damage for Oz. So I guess as supports they're decent but as DPS very very lacking, so much so that I mained phys keqing and fischl instead of electro lmao