I,m not positive but I think WD is basically mineral spirits, which tends to lift the water away and evaporate. WD does leave a tad more film than mineral spirits though. The problem with alcohol is in most of its forms it has water, the percentage just depends. I use denatured alcohol all the time, I can speed curing of wet leather with it. I would not use alcohol without using mild heat to dry the remaining moisture on metal. As long as there are no plastic parts acetone(nail polish remover) would be better.
Here is the problem with removing all traces of oil from metal. If you are in a humid climate the metal starts to rust immediately, even if you cannot see it, when exposed to air. Because the metal is warm from drying the pores of the metal are open. I use this method to antique metal, because it is essentially what happens over years with pre 20 century guns used daily. I completely degrease the metal, boil the parts in salt water and remove them and let them sit. After doing this repeatedly a nice grey blotchy finish grows. This is the change of the rust in boiling water, basically the same way people used to clean their guns. Once desired finish is arrived the rust is neutralized by boiling with baking soda water, and then treated with hot vegetable oil.
So you may want to be careful with the alcohol.