There's no NEC restriction, but a recommendation would be to keep the signal circuits (phone, 4-20ma, Ethernet) as far away as possible from the power circuits. A 12-inch minimum separation would be good, if you can manage that.
The 480V and 120V circuits can all go in the same conduit (provided you use 600V insulation for everything), but it's generally best to separate the 480 V from the 120 V if practical.
Use shielded cable and twisted pairs for all the signal circuits.
Of course, you could run fiber, then all your separation issues go away.