Can anyone other than the spouse be added to title if they are not on the loan?

See the answer below directly from VA:

 No - a spouse can be added to the title.  However, if a non-spouse (mother, father, significant other, etc) is put on title, it becomes a vet/non vet loan and if caught, we will reduce the guaranty to 1/2 the purchase price and applicable funding fee.  Or, in some cases, the loan was not eligible for guaranty and guaranty is cancelled.