Board Thread:General Discussion/@comment-35836648-20190425203520/@comment-26832713-20200210185108

Canonically, the gems only work in their home universe, meaning there can be no totality stone, no omnipotence stone, none of that. Besides, all six gems already cover all the sub-concepts listed in this thread. Matter is included in the Mind Gem, because it grants the user telekinesis, which is literally the manipulation of matter. Force is literally the Power Gem with a different name. Physiologies are a combination of the Soul and Reality Gems. And they are only referred to as stones in the MCU. But if you're not following the canon, that's your choice, you do you, et cetera.