Just as with folding chairs compared to normal ones, clamp lamps do not have the same status as table lamps. It seems unfair, as clamp lamps are very useful. Maybe it is linked to their unique use and the fact that when not clamped, they are unable to stand on their own without losing their balance or falling over.
Inga Sempé was always impressed by the clever clamp lamps of her childhood, used in many French country houses, as you could get them really cheap in hardware stores. It was very simple: a clamp attaches to the socket of an incandescent bulb and a cone shade sliding on the bulb to direct the light. A masterpiece.