@Samuel Derenboim please find attached the Scripts and Worksheets. You first need an extrude per Texture in the Design Layer (for each you want to create into a Material). Then run the "Create Materials From Textures" script. Then update the "Edit Materials" Worksheet. In that Worksheet, you can copy/paste values down the column/s and/or write specific values. It's a pleasure to use. It will get heavy with a lot of entries. But still infinitely easier than doing it long-hand. All thanks to @Ju