Missing Skin Textures

@ThatVolvoGuy  Please clear Origin's cache:

https://help.ea.com/en/help/faq/clear-cache-to-fix-problems-with-your-games/

and repair again.  Sometimes the first repair doesn't take, and sometimes clearing the cache helps.

Otherwise, you may be stuck uninstalling and reinstalling the game.  In that case, put aside the Sims 4 folder in Documents\Electronic Arts so it doesn't get deleted (it shouldn't, but sometimes it happens), and you can restore its contents after you've reinstalled.

Whichever approach ends up working, keep in mind that sims who are already affected may not return to normal until you've switched their skins once or twice.