Ugh! Looking at that sort of cable hell makes me feel ill.
I find the view under my desk bad enough. Here it is, with escape hatch (yes, I do know the carpet needs vacuuming, thanks):
The two thin black cables are for the desk speakers - one is the power supply, the other the link between the two speakers.
The thick black cable is for the iMac.
The thick white cable leads to...
L-R: lamp, speakers, charger
Plus assorted USB cables for different things that need charging, which include the Anker power bank. It would sit on the floor but I don't have a phone charger cable long enough to reach the desk. Maybe I should swap the extension for one that can be attached to the wall or desk. Or just get a longer charging cable.