I don't grow autos and most of the photo-period plants that I grow are actually clones from clones from clones.
Actually, I did grow one auto-flower but that was by mistake. Using that experience as a possible way to help with your situation the best thing might be to continue growing all 5 like they are all photo-period. Eventually the "auto" should let its presence be known. It might enter a pre-flower stage for a week or two but then it will start to flower.
If that happens can can increase the length you leave the lights on and the auto should continue to flower while the photo-periods just grow a bit more. After another week or so you should be fairly confident that you know which is the auto since it will refuse to stop flowering.
Just a tip but it helps to turn the grow light off and use normal room light. That way the pictures will have more true green colors instead of that yellow-orange color from the light.
A couple of your seedlings look lanky or stretched like they are trying to grow closer to the light source. Either lower the lights a bit or put the plants on blocks or something that can raise the up closer to the lights. I have had a few plants from seeds that look a bit lanky at first like they are not getting enough light so that is what I do.
