“The Akh, was a concept of the dead that varied over the long history of ancient Egyptian belief.
It was associated with thought, but not as an action of the mind; rather, it was intellect as a living entity. The Akh also played a role in the afterlife. Following the death of the Khat (physical body), the Ba and Ka were reunited to reanimate the Akh.” – https://en.wikipedia.org/…/Ancient_Egyptian_concept_of_the_…
“The akh, another spiritual entity which “was the transfigured spirit that survived death and mingled with the gods.” One source explained that the akh was only allowed to individuals whose souls were worthy because they were good people in their past lives.” – http://myweb.usf.edu/~liottan/theegyptiansoul.html
“Aten was a being who represented the god or spirit of the sun, and the actual solar disk. He was depicted as a disk with rays reaching to the earth. At the end of the rays were human hands which often extended the ankh to the pharaoh.” – http://www.egyptianmyths.net/aten.htm
So although wikipedia and other places say that Akhenaten means “pleasing to Aten”, I would say that I think it more means something along the lines of “The living body, intelligence, and immortal soul, animated by the spirit of the sun, given to the deserving (or chosen) one”. Akh-en-Aten = The Akh IN Aten
Although that’s a long description, that’s why these things are relayed by much shorter names and symbols, in order to convey deep wisdom and knowledge in a short amount of space, only to be understood by those who spend the time looking into these things deeply.
The Akh may be similar to what some call the etheric body, that animates the astral and physical bodies. And the Ka and Ba.