I don't recognize any of them, but the baby with the flower-print dress looks very familiar..
Look and see if they have any marks made by the manufacturer. Usually with the dolls that are worth something you will find both the name of the company that made her and often a date. Posting that info here might help to get more people on the case; we have a couple of members here that love to solve a good mystery.
And at the very least, having that info might at least give you an idea of where to start to price them accordingly.
Good luck with them!