The industry I used to work in used an Independent Assurance Reviewer (IAR) role. The IAR signed off a go-no-go review, whose primary content was identification

The industry I used to work in used an Independent Assurance Reviewer (IAR) role. The IAR signed off a go-no-go review, whose primary content was identification of the risks that the business would incur if it proceeded past a specific review gate. If an IAR failed a review, the business could still proceed, but the responsibility for subsequent failure then explicitly lay with the leadership rather than the engineers / reviewers. This would be rare though, in most cases IAR failures would lead to mitigation of the identified risks. In an ideal case, the IAR was identified at the outset of a piece of work and was then involved throughout the project life cycle (waterfall or agile). Review points included bid release and contract acceptance as well as design and test readiness reviews.