In order to show up correctly all those parts need to be default replacements now, either with HQ LRLE-format replacements, custom TGIs for the textures, or with the texture TGI type changed to fool the game.
With the Dec 2020 patch, the skin colors were converted and a zillion more swatches were introduced. With patches in Oct/Nov, it made the same change to the textures that define skin definition and body/face details. With the June 3 patch EA changed the way it uses textures for eyecolors, eyebrows, and makeup. Do you use the HQ Mod? After patching your game, are your sims wearing a skin suit? Or all black? Are their eyes all basic brown with no way to change them? Are their eyebrows missing? These default replacements should help fix that!
