I have several nicknames..Jojo, Julz, And Tiger, which everyone associated to my dad STILL calls me at 42..If anyone on my dad's side of the family were asked, they would know me that way..No one has EVER called me Julie. or Ann.
As for my girlz, both have lots of nicknames.
Anna's: Annechka, the most common. Anni, Pootie, Sussie, and Ahn.
AugustRose: Auggie, Rosie, Tootsie, AugaRose, and Augalee..
Many, many, times when I call the girlz at the same time, I call them, "Hooootttiies" I don't know where hoootie came from, just sounds loving and fun to me. When I am fussing at them I use their formal names...