I'm almost positive plant 1 has pistils shooting out !!! EEEEK!!! EXCITING!!!!! Plant 3 there is a white hair growing out of the corner of the node it is hard to see but there is a tiny white hair.
Yup, plant 1 is female, and the other 3 are a little too early to tell. But now you have one confirmed female so you know exactly what to look out for If your other plants grow anything other than those thin white hairs as with the first plant, then they ent female.
One of my plants looked like your 2-4 pics, and it turned out to be female, but a lot of those DID turn into branches.
Like prev. said, too early to say for sure.