Of course, I'll try to add these items in the next update. Also, thank you for your support. It's very nice to see when your work is useful to someone.
An rough list of names can be found in the pack updates. There is no exact list of “sprite-name” I didn't want to limit the authors who will use the pack to the exact name of the item, but rather give them the opportunity to understand what it is themselves. +some items may have multiple names, such as copper armor, which can also be bronze armor.
Sure, you can freely use it in your projects, even if you want to sell your game. Just add in the description something like “some of the icons used from here: *link*"
