Energy is a bit hard to define.
For example: in hot air, the “energy” it has when you warm it is the average kinetic energy of its atoms increasing. So in that case its kinetic.
A photon has energy – but its a different thing than the kinetic energy carried on the speed of an atom.
Potential energy is converted to kinetic and vice versa, but its different things.
The energy available in an unbroken uranium 235 atom is something else entirely, but then it converts to stuff moving very fast and radiation.
I’d say that its a value that aggregates several different things giving some equivalences
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