Instead of a proper shadow, Yuletide Galvan and Dozer Galvan have a big circle that can be distracting. This is most easily visible on Merchant Port.
Additionally, Lucha Galvan has NO shadows except for when they are doing side B.
The side B shadow is also odd in all skins: it is a large oval through the whole animation, which would probably work for the drill part but looks odd during the start and end parts of the animation.