as well in pic 5, post 1. Notice the growth tip and the newest fan leafs. Notice how the veins seem to be deeper in the leaf. Or from a different angle, Notice how the intervenual regions appear to have swollen. It’s heat stress.

I didn’t read everything you put. Did you get all these plants 3 days ago. Because if so, the heat stress isn’t from you.

Your temps seem ok, try to stop the changing and make sure the lights aren’t too close it can cause the effects on the growth tips