Eeeh not the biggest fan of Baby-bewear, tho it might grow on me. Probably gonna be at least decent in LC tho.
Since Sand-Grimer is a ghost type, we can assume that shovel stuck into it's head was what killed it right? Between Drilbur and Sandshrew, I doubt it'll be that good here.
EDIT: Hey turns out SadFish can transform into AwesomeWhaleFish, so it probably won't get an evolution :/
Ghost/Fire Cubone (or maybe just ghost or fire going off of Ninetales and Vulpix) will probably be about as good as regular Cubone, assuming the thick club still works.
Dark Meowth is interesting but until we know for sure how much stats for Alolan forms will change, I can't really make any assumptions.