An older version of this list could [rightfully] include cards like Gilded Lotus, Illusionist's Bracers, and Primal Amulet, which still very much have a home in Commander, but they no longer stand up to the best of the best artifacts
For example, not affecting opponents' permanents or lands makes it less risky in terms of potential blowouts from enchantment destruction
Even their second ability, which can make players lose instantly, doesnt push them over the edge
The third category is a catch-all for various other ways to earn Energy or to spend it
It can also make a strong commander rather than a companion because you can do some interesting things with all the 4-mana Clone effects and a Mirror Box
Illustrated by Dominik Mayer