what does baby call you?

I have only had little ones, and they all end up calling me Momma, or Momma K***. My sister's foster son was just about to turn five when he came, and he called her by her first name until TPR occurred (with an occasional "Mom" in there). Now they are adopting and he is calling them "mom" and "dad" almost all the time. Littles might as well call their foster mom's mom because that is what they are being, that is a role they understand (hopefully) and they don't get that confused having more than one person called "Mom". My nephew calls me "Mom" sometimes, but he knows that my sister is his real mom. It is just because other people call me Mom :D Someday if I have older kiddos, school-age, I think I might go with Aunt...I like that. If I get teens someday, I'll let them decide, but I don't like the idea of them using my first name if I am acting as their parent, if there are other kids in the house, but if it is just foster teens, that would work.