Skill to max out

So i have these 5* skill champions i would like to rank up but limited resources.So who would be better?(all are awakened)

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So i have these 5* skill champions i would like to rank up but limited resources.So who would be better?(all are awakened)

Shang-chi or Kingpin for sure

They are all good,

I’d go with Elsa but I might be biased. Do you have any 6* skill champions?