Matter of fact, the same happened with a coinmail belt:
sooo I think there are a lot of item bases which are in the wrong section of the loot filter config
from what i understood these are bases that dont drop normally, all the ones you show are specifically from the merchant caches. so they are unique in the way they drop. it’s a confusing name for the subgroup but it seems to cover a bunch of these special cases. I’d say improving on the naming would be good, though since i personally don’t know all the drop varieties in this group i’m not able to suggest one.