I suppose there are many ways to choose the subset. Maybe software engineers in specific verticals: medical technology, avionics, etc.? Given the number of security breaches lately, CSO seems like a no-brainer, too.

Solution Architecture is where I would go if I wanted to credential IT folks like engineers or CPAs. Require the license if you are accountable for implementing a solution that hits various thresholds.

Infosec is an area where there is already a problem with credential collectors, and in many places it is just a dressed up audit/compliance function. It’s not a standalone vertical imo.