Names since deleted from raider_skins.json still load and apply to raiders

I've practically wiped the raider_skins.json of the pack in users it has listed. Some of the skins still show up. It's spotty as only a couple of skins still slip through the cracks, such as Notch, Steve, jsl7, Funwayguy, vash505, and Kashdeya. If they're hard coded, I'll cut my losses and ignore it, but I'd like to make sure I'm not missing anything before I give up.