Template:ItemIcon
The base ItemIcon with all functionality.
Template:SmItemIcon
A version of ItemIcon that always has a image height of 25px and links the item.
Template:MdItemIcon
A version of ItemIcon that always has a image height of 30px and links the item.
Template:RarityItem
A version of ItemIcon that displays the rarity colors and links the item. Defaults to 25px but can be adjusted.
Template:ItemIcon Insert
A utility template that inserts information into the "item_icon" table, which is where all information used to provide ItemIcon functionality is stored. This template should only need to be manually called for pages that are not items, but might want to have an icon associated with them, for example 
Food Supply Table 4.