Chick 1 is a meat bird cockerel. He is of an age to butcher and eat.
Chick 2 is a meat bird. I want to let but that comb is quite red. At 9 weeks it is also of an age to butcher and eat.
Chick 3 Is a pullet and I'm going to go with a production red since she is smaller than the other two meat birds, so she should lay you some eggs in 10-15 weeks maybe a little earlier.
If you are attached to the meat birds (chicks 1&2) then you need to put them on a diet and exercise program because otherwise they will lose mobility due to leg and heart problems. They are bred to put on muscle very rapidly so that they can be harvested at 6-10 weeks. After that time the meat becomes tougher and the birds start to decline in health. Some people have managed to keep the odd one alive to lay eggs and have a slightly longer life span but they rarely make it beyond a year old. Obviously a cockerel is not going to pop any out breakfast ingredients, so No.1 sadly has no material benefit in trying to extend his life. They have obviously had a much happier existence than the vast majority of meat birds, but it might be kinder to butcher them now before health issues set in and at least that meat will not go to waste.