Some enchantments, including sweeping edge, looting, projectile protection, depth strider, are not craftable. The recipes seem to be correct in the anvil recipe configs and the recipe_mods script does not appear to remove them. JEI does not show these enchanted books but, on rare occasion, they can be enchanted onto items through an enchanting table.

Looking further through config files, I found that these enchantments can be crafted through crafting specific enchanted books with specific items in an anvil. The books never show up in JEI searches, but the crafts can be seen in game searching uses for the items that craft it. This makes finding these enchantments difficult without reading config files to find the required items.