I found a minimalistic cable organizer called ‘Loop’ here on makerworld (https://makerworld.com/en/models/2227259-loop-a-decent-cable-organizer) and I wanted a gridfinity holder with little waste space, so I made it.

It's a 5x1 gridfinity bin with 6u height (around 46mm or so) and can hold 4 of these loop cable organizers.