cleared Memory 14 a few days ago.
team 1
Himeko (main dps) = level 70. relics at +15, trace and light cone upgraded to what equilibrium 4 would allow
Stelle = level 70. Relics incomplete - none for the head resulting to lower hp.
Tingyun = level 54, somehow survived almost unscathed (lol) because of March 7 shield. Actually able to contribute to the damage by buffing Himeko and Stelle.
March 7 = level 60. Shield helped people survive.
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team 2
Serval (main dps) = level 70, relics at +15, trace and light cone upgraded to what equilibrium 4 would allow.
Qingque = level 70, but relics are mostly just at +5 and +6, not enough resources to get to +15.
Herta = level 60, but relics have no +. Cannot do much damage. Somehow survived without dying. My other remaining characters are lower level than her.
Bailu = level 70. Relics mostly +15, but I think the one for the body is just +12, because I could not find a 5 star with Outgoing Heal Boost as main stat.