Ranks are relative:
warmer (81%) means warmer than 81% of this archive, not that the person is warm-toned. Hue is harder to measure on deep skin — both colour axes shrink toward zero as less light returns — so half of deep-skinned portraits earn a firm reading against 85% of the rest. Where it cannot be measured, nothing is guessed.
Two different things. Skin tone is measured from the photograph — an ITA angle on a published scale, the same way for everyone. Archive group is which folder a source sheet sat in, and it records race so the set can be shown to span skin types. It is not a measurement and never describes a person. Where it says inherited from folder, nobody has checked it against the image.