Are the 6-pack and 8-pack Amazon brands actually different from each other?

Across the reviewers we read, the budget multi-packs from CHARMKING, BLUEENJOY, FuelMeFoot, Iseasoo, and PAPLUS perform similarly in casual use, with the main differentiators being calf width, top-band tightness, and how quickly they relax with washing. None of them are a substitute for medical-grade graduated compression.