A second facilitator wants the MLS risk list grouped by ISO/IEC 25059 names (correctness, robustness, societal and ethical mitigation, and the rest) instead of by workflow lane. What should the tester accept?

Think of the risk list like a parts bin you can sort two official ways: by workflow lane, or by the ISO/IEC 25059 names (correctness, robustness, societal and ethical mitigation, and the rest). Either cut is a legal risk-based plan. Forbidding the 25059 grouping, swapping in a Chapter 5 bias-test how-to, or tossing the list because two cuts exist all miss that official alternative.