The Mavic wheels you have listed are a disc and a 5-spoke, which are heavy. The Cane creek endurance wheels are 85mm deep section rims, which are heavy. The Ellipse and the Volos are low-to-mid end (relatively anyway) track wheels.

You're comparing them to a carbon rim/hub road wheel (the carbone) and a titanium hub wheel (the Crossmax).

In any case weight means very little on the track. Rotational weight is important depending on the event, but that means rim weight not wheel weight. I know the cane creek volos wheels have a pretty low rim-weight (the nipples are at the hub) but I don't have numbers.