I made a 6u height Gridfinity Storage Box by Pred (now parametric) https://www.printables.com/model/543553-gridfinity-storage-box-by-pred-now-parametric/files for all my small electronic components. This jumper wire holder was made using https://www.printables.com/model/428684-gridfinity-adjustable-jumper-wire-comb-higher-dens added to the https://www.printables.com/model/293060/files file w1_d3_h6_c1_EfficientFloor.stl
Not much of an engineering marvel, just using Prusa Slicer’s add part option.
The author remixed this model.
The only changes I made to the wire comb was to remove the small tab from the base of the original.