Since these eggs started out so cold, there is no doubt some farther behind, similar to a staggered hatch, some will need lockdown sooner than others. Not the best scenario but these things happen!
If these were my eggs, with ranges of 14-18 days, I'd wait one more day and tomorrow put them all on lockdown. I would candle each egg to make sure it's alive and with a pencil, draw the air cell outline onnthe eggs. Turn off or remove the egg turners and lay down that rubber shelf liner with the tiny holes and put all the eggs on it so you can see the air cells for pipping, and close the lid. Get the humidity up around 60% to 65%, it can take several hours to do so, if needed, add a small cup filled with water and a damp piece of a new kitchen sponge to put in this cup to raise humidity if needed. You should never open the lid if there is external pipping in any egg as the loss of moisture from opening the lid can dry out the chick and it will stick to the shell and die. We can worry about hatched and unhatched later. But for now, this should be the plan.