Whos SES score will affect? whos SES complaint rate will increase ?

As fintech domain we are sending transactional, marketing emails to mutualfund advisors. When C named client has 2 mutual fund advisors A1 and A2 if Client C marks advisor A1 email as spam then Client mail id comes into our DB email_ignore_list and we update suppression list we never send emails to them. But Client C has A2 advisor from his side mail should go to Client C as client C did not marked A2 emails as spam. So if we sending mails to client C through SES and his mail id is in the suppression list, then will our SES score affect ? Our SES complaint rate will increase or not in this case?

As Email Service Provider we send emails to clients of our client behalf of them through our SES . Here Advisor email is verified ( Our Client ) and his client marks his email spam, whos SES complaint rate will increase ? Our client ( advisors rate ) or As ESP our score will affect ?

Please answer all the Question who know somthing about it .