It’s best to keep the power supply wires from battery to ESCs as short as possible, and it does not matter so much about how long the motor wires are.
Yes - the signal wires are much more likely to pick up noise when they are longer.
All wires have to be a suitable gauge of course.
Ideally the signal wires would use a CAN bus or serial protocol like DSHOT rather than just PWM.
Plenty of commercially available motors and ESCs, and integrated sets (ESC inside the motor mount) require very long supply wires, and correspondingly long signal wires. This is basically the worst-case scenario and it’s a wonder they work as well as they do.
If you go down this path I would advise adding extra capacitors in the power supply wires as close to the ESC as possible. Also twist the signal wires.
Have a read through this too: