Pretty much exactly what you're already using is what I'd suggest.
Later on you'll need to split into two teams for abyss, at that point I would just lean more on ningguang as main dps since she can handle every every floor if you bring the right supports to break shields. And then team two stacked with the rest of your top fighters.
You probably won't regret dumping some resources into Zhongli where you're at, his meteor will do some good work supporting Ningguang as main DPS and his shields make everything ez-mode until you start hitting higher world levels.
Later on you'll need to split into two teams for abyss, at that point I would just lean more on ningguang as main dps since she can handle every every floor if you bring the right supports to break shields. And then team two stacked with the rest of your top fighters.
You probably won't regret dumping some resources into Zhongli where you're at, his meteor will do some good work supporting Ningguang as main DPS and his shields make everything ez-mode until you start hitting higher world levels.
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