Ahoy mateys.

I have completed a Stardust-less Expert save to New Game +++ and levelled all allies to max level (99).
Specifically, this was to record each ally’s stats – with all passive skills in the skill tree unlocked – at levels 80 and 99.

https://docs.google.com/spreadsheets/d/1UyDZI0FuRxvxsnSF9Oua6QiF1j0AEFiP

Since not a single Stardust was spent in all 4 New Games, the data I’ve collected should accurately reflect each ally’s standard strengths and weaknesses through their base stats, with their completed skill trees counted in.
(That is, assuming the ally levelling is consistent in every save.)

[P.S.] I realized late that I have the Dark Aurora Pack, which says it provides Aurora “improvements of Magic Power, Defense and Magic resistance”. Although I don’t have the skin on, equivalently the Light Aurora Pack’s healing ability is also available without equipping the skin. Oh no, does that create different stats?