There are several observations you have added to that image which are not entirely correct. There are likely multiple light sources, as is standard with "PR" photos, but you can clearly see the dominant one comes from the ceiling as there is a "shiny spot" on people's foreheads to a greater or lesser extent depending on position, or changes in lighting on the hair. The exceptions to that are the male with gelled hair on the right (but other lighting on his face makes me think there is probably a window on that side out-of-shot) and the male who poked his head up just above Zuckerberg. The "perfectly lit" female is uneven - the right side of her face is shaded and she also has the "shiny spot". As for her size... some people are small. One of my high school teachers wasn't even 5', it wasn't dwarfism, all proportions were correct; genetics at play. As for the gelled males glasses... I have seen plastic lenses with anti-reflection coatings; combined with a lucky angle and you wouldn't see anything reflect.
I would suggest that there is no flash on the selfie camera, that there is significant overhead lighting in multiple fluorescent tube lights (probably with diffuser coverings) and at least one, but probably a whole wall of windows to the right of and behind the camera.
I don't know what TurboMach1 means with his analogy, but agree with Slaughtahouse's supposition regarding soul.