I’m not a Mom, unfortunately, so my feedback is not aligned to your ideal client, but here are some thoughts:
1 = A Bit too Cluttered
2 = Arty and Gender Neutral, BUT I’m not sure where you’d put the baby LOL (the empty space looks too small?)
3 = Gender biased to baby girl – but it’s unique
4 = Arty and Gender Neutral
5 = Arty and Gender Neutral
My Top pics, in order, are 4, 5 with 3 being a possible idea that could be a standout or risk at the same time. If you choose the unicorn girl design, you may need to create a new Copywrite for the design.