Did not examine myself - but, are they identical in name, or do they all just seem to be identical in function. If the latter, it may be an ‘unfinished’ naming convention the developers have in progress for later UI implementations. But, the blendshapes seem different than most of us are probably used to, they seem to control wrinkle maps and not the actual movement itself. Like, the blendshapes just augment the bone movement. (ie - a drop/open jaw blendshape makes the jaw’s wrinkle happen, but the jaw only actually opens with the jaw bone being rotated. Whereas we would have expected traditionally that the blendshape for Jaw open would actually show you the jaw opening.)