You should move the smallest plant in the middle so it gets more light.
Easy to tell which ones the cuts are,I'd go easy on nutes if you are using them at all,the cuts look a skosh yeller.Looks good though man in a couple weeks you won't recognize them.One day I want to say,"this is my first legitimate grow lol"They say miracles happen!
In the first two pics the plants look healthy,the other pics show defeciencies I believe.I would hit them with some N for sure.What is your water source?If it's R/O I would definitely get some cal-mag.It wouldn't be a bad idea to hit them with some Epsom salts along with a nitrogen feeding.How often are you needing to water them?
You should balance Ph after adding all nutes and additives,sorry if I misunderstood you
Different strains are going to have different nutritional needs but I think it's safe to say the yellowish plants are nitrogen deficient and could use a feeding next time around.The seedlings look fine to me.The newer growth will always appear lighter in color than the established leaves but when the older leaves start to turn lighter/yellowish in veg that's normally a sign of nitrogen deficiency especially when you haven't been feeding them