Guild Wars 2

Those are all the common items, so I’m quite sure. But the items you can make with those raw materials can be used for discovery. For instance in my weaponsmithing I can use Sword Blades and Sword Hilts for discovery which I make out of those raw materials.

Basically, if the item is not in the discovery screen then you can’t use that item to discover more recipes. So if it isn’t there, you have already discovered all recipes with that item :)