This energy-body always has a small part (a few inches in diameter) in the center of the lower belly.
The most common additional part is a pale, half-inch-thick mask just under the skin of the face, linked up from the component in the belly, which is present if the body is owned by an Ultimate-self. That structure I found due to a comment by my colleague Ed Dawson. A human body which is not owned by an Ultimate-self sometimes has nothing in that location, although can have other structures in the face or head location (or occasionally in the chest or neck area), signaling the person’s personality characteristics using a variety of different shaped structures.
The mask signaling that the body is owned by an Ultimate-self was adopted fairly early in this Physical-universe, and was a signal, obvious to others, that the body was owned. The original design for this type of energy-body was one of the pre-set options available from about the middle of the second main time-line of the Magick-universe, and could produce a wide variety of different signal structures. The current version (specified by Morphic-fields) confers something like a sense of sophistication. If the Ultimate-self owning the body is in lower than average condition, the mask structure might be partially absent or distorted in various ways, or sometimes entirely absent if the relevant Ultimate-self has lost its main stable connections to beyond the Physical-universe.
Other components typically include small structures behind the lower back, each with an energy-line linking them to the component in the belly. For beings in very good condition, there would be around 600 of these. Beings in typical condition for a human on earth have an average of 25. Each of those small structures helps confer different options, partly by linking to relevant Morphic-fields.