What is not mentioned in your list, but is very important though, are the rubber isolation connectors which are connecting the sparkplug to the ignition coils or high-tension cables. Please be sure that they are flexible, and do not break apart when you squeeze their sparkplug side tips. Please be sure that they are as good as new. If not, there will be high volage leak, causing damage to the spark plugs and coils.
The rubberised wiring you are talking about is the primary voltage supply to the coils. It has some wires inside, and is not replaceable separately. It is part of the engine wiring harness.
The best way to check the wiring harness, is to remove the outer tape layer starting right after ignition coils rubberised wiring. Look at the wires, if their isolation is all cracked up and disintegrated, the wiring harness needs repair or replacement.
I have repaired these harnesses by replacing all of the damaged wires one by one u to the engine control unit plug. It is a 8-12 hour job.
So , please open up the outer tape layer on the engine harness and let me know what you find.
These are the first things to check
To give you part numbers, i would need the VIN of your car.