PLEASE, I need help!!

Since the new Archon Quest is coming soon, I have a fear that Hoyo could make Nahida unplayable temporarily at some point during the quest (Because she's connected to the Irminsul, the model leaks, etc). I REALLY need help to build someone else in case that actually happens. My team is her, Mualani, Fischl and Noelle (I know it's not the best team, but it works for me just fine). Can someone help me with who to level up?