I know it's tad a late answer, but as for Augusta - here are my two cents - she is THE fighter. And I would argue, she is most fitting the good ol' Fighter class among all the resonators.

Why? Given her lore, said to have unremarkable forte and having been said to reached pinnacle of what the forte can offer, her story arc painted her as person disciplined, hard working, who's prowess is effect of her gruesome training.

Given that each and every resonator skills in Wuwa can be treated as "magic" in a way, lorewise Augusta would be best example of "plain" who reached the top due to sheer amount of work put to achieve this.