You received good advice. Combining the ignition leads with the low voltage signal leads is not a good practice. The only item I have issue with is the mag "p" leads. Assuming you have used shielded wire and grounded the shield properly, there should not be any issues with running them next to the other sensor wires such as the oil pressure, fuel pressure etc.
The CHT and EGT lines I ran separate in their own adel clamps. The CHT were run above the intake tubes along with the alternator and starter lines. I split the CHT and EGT sensor wires inside the cockpit and ran the left and right through separate firewall penetrations. The left went with the P leads, sensor leads, and battery power lead. The right went with the Alternator output and field leads, and the fuel flow sensor.
I attached a photo taken during the firewall forward process.
