Looks good, and performs well.
There's a small glitch, though - in decay bone, the weapon remains visible, a bit elevated from the floor, until it vanishes suddenly - you'd better just have it disappear along with the body in decay flesh.
Another thing I'd mention is that you could arguably achieve that result using in-game textures. But since you're going for very specific aspects in each raider, you may keep the custom one if you prefer. I'd just recommend you to work a bit more on the chest tattoo, at the moment it looks blurry. Maybe adding some soft contours might help.
Apart from that, it's good to go. All those raider variations could be very useful altogether. I'd recommend you had them all merged in a single bundle, even to have them better organized and accessible. (You may request it if you want)
Awaiting the fix mentioned above.