The Runequest series is a favourite of mine as, to my mind, it marked a more sophisticated sculpting style by the Perry twins, and a new approach to packaging by Citadel.
Box 1: Human Adventurers
Box 2: Non Human Adventurers
Box 3 (v1): Trolls and Trollkin
Box 4 (v1): Beastmen
Box 5: Dragonewts
Box 6: Humans and Aldryami
Box 7 (v1): Flying Creatures
Box 7 (v2): Demons