I'd love for the ability to get a list of the armors added in-game. If possible can you make it for 1.12?

Hi, it should be possible to find the list of armors if you dump all items to a file, then "ctrl+F" to search for keywords or parts of keywords like "Chestplate" "Chest" "Boots" "Boot" "Shoes" "Pants" "Pant" "Leggings" "Leg" "Armor" "Helmet" "Hat" "Helm"

I highly recommend downloading Notepad++ for general use when it comes to looking at files with lots of text or code:
https://notepad-plus-plus.org/downloads/

That isn't good enough because you'll often get mods that decide to name their armors something that doesn't fit in with those words.