All other sets can be acquired through the standard measures of crafting or random loot in the wild.
Occasionally one item of a set might rank higher than another for defense, but we're only considering items from a set as part of that overall group. Generally, our rankings are based on the defenses provided, with weight a secondary factor.
Before we dive into the specifics of the best sets and individual pieces of kit, there are a couple points to bear in mind: