Hi Laurie.   I think Father/Dad - Mother/Mom... are considered the same here no matter if it is on the front of the inner verse.  Step Dad/Birth Dad/Step Mother/Birth Mother etc. seem to make the difference.. At least this is how I understand it within the categories.   I also see that many here do have Grandma and Grandmother with the same design and in the same category too.. So it is really hard to say which way is acceptable consistently.  Could be a new way here as you said..   Best wishes to you on it~    
 
I was of no help at all to you on this one.. Hahaha..  The more I  looked the harder it got to say for sure.. Sorry~

Thanks everyone.  I was doing my dishes and it dawned on me what the reviewer meant.       I had a Happy Birthday Papa, and I put it under both Grandfather, and Father.  I had put a note to the reviewer that my nephew's children called him papa, and there might be more that call their father's papa.
 
I do understand what the reviewer meant about not being in both of those categories.  I removed the one for Father/Dad.
 
Thanks.  
 
Laurie

 Thanks, Sue.  I sell many more Papa cards than I do dad or father or grandfather.  I don't know which one the recipient wants it for, but it's a very popular one for me.