What is a fact, is that some of our known reality is indeed classified as 'energy'. Question is though, how much of reality are we aware of firstly? Our measurable 'reality' accounts for a small portion of the known universe in itself. With other, more elusive, albeit potentially misleading labels as 'dark energy' & 'dark matter' accounting for most of it. Even though we know the existence of this, it's still a mystery, yet the terms used to describe it, may in fact, lead a person to a possible wrong assumption. Reinforcing something that really, no-one is sure of.
What else might not be 'energy'? For us to know it's energy, we must be able to measure it's effects, substance, nature & capabilities.
God, or one can use the term consciousness perhaps, or divinity, even my soul. Are these 'energy'? and if so, how do we know? Are we not assuming, based on our limited conscious expereinces of our reality?
Might be worth pondering over whether, is something in itself 'energy', or is it the effect it may have on something, that is in fact able to be (at present) measured in terms of an energetic response. One doesnt' necessarily mean the other...
Take care
Wayne