Until the Grands could talk we were called lots of names. 10-25 YO all calls us Gramma and Grampa. Oldest Granddaughter lives with us and when she leaves us a note she signs it Gma and Gpa. Our two Great Granddaughters call us GGma and GGpa. Their other Grandparents are Korean and they call them those names.
I'm with others any name is okay as long as they call me.