>>9730746Its easiest to tell by the jointing and accessories
Elites, Legends, and Defining moments are all basically the same, just covering different appearances. Elites are the regular line, Legends was the original name IIRC and is still used for some exclusives, and Defining Moments are usually exclusives. But generally these are the highest uality outside a handful of SHF and Storm.
Regular figures are just simple jointed versions for half the price.
Then you have sidelines like monsters or zombies that are the basic figures in terms of size and articulation. And not the MOTU line which is based off Masters of the Universe, used to be Masters of the WWE universe and based on fantasy versions, now is WWE superstars and based on their actual outfits on He-man proportions.