one of the key things to do in a 'serious' datacenter is separate the fiber from the power.

this is why serious facilities have a dedicated channel of yellow plastic overhead fiber tray which contains ONLY 1.6mm or 2.0mm jacketed 9/125 singlemode fiber, with nice smooth corners and spigots on it coming down above racks.

and then the AC power is in conduit and long rectangular metal enclosures.

and the -48VDC cabling on steel ladder rack, often with waxed string lacing if it was done by people who are being serious about it.

on a per rack cabinet level it's also really important to pick one vertical side for your power cables, and data cables vertically up the OTHER side, and stick to it consistently.