sorry, but at least the two middle ones are beyond saving. Cedars tend to die from the inside out. By the time they show significant browning, they are goners.
They are only green on the outside. Inside that the branches are brown and hardened. If you cut back in to that area, it will never regenerate. So if you cut out dead areas, you will always have a hole there.
All except the last one are way too close to the house, which may also mean they were too shaded. They don't like too much hot afternoon sun (depending on where you are, they would need more protection in TX than in cloudy OH). but they do like a lot of light. Too shaded may also mean that the soil stays too damp. In sun, soil dries out more. Cedars like to be very well drained. If I had to guess, I might think they got root rot, which is a fungal disease they are prone to in conditions of over-watering or lack of drainage, soil that stays too damp. (But I'm no expert and that is partly guess-- see what others think).