CFC 11, or R-11 has the maximum potential amongst chlorocarbons because of the presence of three chlorine atoms in the molecule.
Hydrochlorofluorocarbons have ODPs mostly in range 0.005 - 0.2 due to the presence of the hydrogen which causes them to react readily in the troposphere, therefore reducing their chance to reach the stratosphere where the ozone layer is present.
ODP is often used in conjunction with a compound's global warming potential (GWP) as a measure of how environmentally detrimental it can be.
In a broad sense, haloalkanes that contain no hydrogen are stable in the troposphere and decompose only in the stratosphere.
The ozone depletion potential increases with the heavier halogens since the C-X bond strength is lower.