>>45481567All attacks in Pokemon use energy, except arguably Struggle. Normal type is just plain/pure/neutral energy. Everything else is a special variant of that. I think collectively GF uses the umbrella "Infinity Energy". Which is basically just physics/metaphysics magic. Energy (outside of a physics and electronics standpoint) is synonymous with:
---Mana / Chi / Qi / Chakra / Lifeforce / Tachyon
I believe, purely speculation based off of what they have said, the Pokemon universe only has 20 or so elements. A tiny periodic table that makes up everything.