Not the most populous category in my bestiary, apart from a few by Citadel / Forgeworld and Ral Partha. Definitely nice models though!
More to come...
C34 Earth, Air, Fire & Water Elementals
C22 Mud Elemental
C29 Plague Elemental - Mabrothrax
C34 Life & Death Elementals
Incarnate Elemental of Beasts
Incarnate Elemental of Fire