Hello and Welcome!
Recently, I've been into categorization stuff. I've created a helper script which helps apply "Over-categorization" rule. It's very-easy-to-use script and I think it would help the categorizers. The simple idea is to scan the main categories, let's say Category:Young women, getting its subcategories and files, then scan the subcategories for files and compare the results. If there are any duplicates, it'll report it. Few seconds after entering Category:Young women, it reported "