If there is a custom weapon on the map, it will all show up as "Extras"
It would be nice to sort weapons from custom maps. (At least weapons from other Call of Duty games)

That would be nice, but there's no way to tell which class a weapon would be in without me manually defining it in the menu for each map, which I don't think is practical or worth it

I found a way to do it for some maps, depending on how they're made
I'll be pushing an update in the next few days if I get it working

Edit:
It seems like it will still require manual filtering since some guns can be improperly categorized by the mapper, also Snipers and ARs are both marked as "rifle", so that kinda throws a wrench in the works

I ended up finding a solution that is still manual, but isn't too bad

It also allows me to categorize the Extra Weapons on the Normal Maps

I pushed version 2.2 which categorizes most of the weapons as long as the mapper tags them properly, thanks for the suggestion