Cable management....crossing at right angles or

Crossing this way or that cannot improve anything, it might eliminate a problem.

Theory is one thing, are you having any problems? If so, I would find the errant interconnect cable.

My cables have been this way and that, including many parallel for more than 50 years in many locations/setups.

Most cables, even the cheap ones included in the box are problem free, occasionally, you get a bad cable. Disconnect, Switch them one pair at a time, ....

I now twist my speaker cables, neg around pos, takes a bit of extra length to do that. Ran them un-twisted for years, again, parallel, no problem.

Using balanced interconnects may help if there is interference occurring from running cables parallel to each other.

I wish I had a dollar for every time I have had to reconfigure my rack and have vowed that this time the result will be neat and organized, only to end up in the same place.

A rats nest of wires with no discernible pattern.