the golden one is a twin bar platy... don't know if that's a mistake that you made identifying her or if she is just in the picture.
in my experiences, platies drop more babies and more often, but they are about half the size of mollies at birth, and most of them dive for the rocks.
naturally, mollies tend to hang out dirrectly under the light, and when they are born, this instinct is already in-tact.
in other words, your baby mollies are really easy targets.
i would recommend that you get some floating plants for them to hide in, then when you find them, seperate them from the tank (breeder net/trap, or another small tank)
do not put them back into the community until they are at least 3/4 cm.
best of luck!