Apply custom date formats to reporting for specific webforms and fields
It seems that the only way to make this happen was to reset the system's Short Date Format to my custom format A. Thankfully, the webform custom DOB field uses a similar format (the same thing but without the hour and minutes.)

If anyone knows a better way where I could have done this on a "per form" and "per field" basis, please add your answer as the one I am providing now isn't really what I was looking for.