Sounds like a basic Ahrefs audit, not really seeing anything bespoke here.

Can you clarify how metrics like DA can be easily gamed? The premise of the metric is the higher the value the harder it is to obtain so you can pretty safely expect 70+ DAs are there by no accident.

How’re you determining your competitors anyway? From your client? From your Ahrefs export? What if those competitors offer services you don’t, and so they inevitably rank for more keywords than yours.