[maicro]

Also, piezoelectric motors are a thing - sure, they're super tiny and for specific purposes (very fine movement), but beyond the fact that they use electricity to generate the vibrations that they then use for movement, I don't think it would be considered "electromagnetic".

Actually, in that same vein would be a Nitinol or similar "shape-memory alloy" motor - run power through it to have it change shape, then remove power to let it relax.

So yeah, unless I'm misremembering or grossly misusing terms, "piezoelectric" and "thermoelectric" electric motors both exist...