My 2B Catleap definitely does not have overdrive. Maybe the others are different. They don't all have the same hardware. The newer Catleaps have a different timing controller, probably the same one as the Crossover.
There are at least two different timing controllers being used. The 2B Catleaps have a timing controller with an LG chip, while the others have a Parade chip. Maybe the Parade controller has overdrive and the LG one doesn't. Someone with both versions found the newer one has a blue tint. He swapped the controller boards and found the blue tint is coming from the controller, not the panel.
There are at least two different timing controllers being used. The 2B Catleaps have a timing controller with an LG chip, while the others have a Parade chip. Maybe the Parade controller has overdrive and the LG one doesn't. Someone with both versions found the newer one has a blue tint. He swapped the controller boards and found the blue tint is coming from the controller, not the panel.