it may be tricky to id seedlings. the seller said these are paphs, but they look like dendrobiums to me. especially when plantlets start to emerge from the bigger plants. coments welcome.
They look like Dens to me especially number 4, I would contact the seller and see if they can ID them, they should know what flasks they had at that time.
Then I would ask what happened to the Paphs that these ones were supposed to be.
Now that I think about it looks more like some Cattleya that I had. I will look to see if I still have any that small tomorrow. I havn't grown any Paphiopedilum so for all I know that is what they look like.