The children’s bedrooms besides Mike and Care’s do not seem to contain much useful information. The “children” sitting on the beds do seem to each have unique features. The children’s gender and age/height appear to differ. Most of the children have toys on their table. One child appears to have an original GameBoy. Every room has the same dark passage to the right of the back wall.
It's difficult to say whether these children are just mannequins or if they represent real children.