If i remember correctly:

Maggie is the one with the blue shirt kneeling next to her newborn daughter.
Lisa's the one in the orange jacket standing next to her life-fiber infused daughter Zia(chick with blue strand of hair).
Bart divorced his wife and he's taking care of his 2 kids cuz visitation rights.

Hope that explains everything.

That immortality elixer is doing wonders for grandpa.