It's less common in the other fields (where an engineer's decisions are less likely to involve life-risking decisions, or enormous amounts of public money), but

It's less common in the other fields (where an engineer's decisions are less likely to involve life-risking decisions, or enormous amounts of public money), but the Professional Engineer certification is certainly a thing in the other fields. In fact, it's ambiguous at least in my state whether it is legal to run a business offering "engineering" services in those fields without a PE on staff.