Loop Lighting
How to spot it. A small shadow from the nose that loops down and outward toward the cheek, without touching the shadow on the far side of the face.
How it is made. One light, roughly 30 to 45 degrees off the camera axis and slightly above eye level. The most common portrait setup there is, and the default here for that reason.
Who it suits. Almost everyone. It adds enough shape to avoid looking flat while staying gentle enough not to dramatise a face that does not want dramatising. If you do not know which to pick, this is the one.