For this type of substance, I selected the Physically Based (Metallic/ Roughness) Graph Template and deleted the Metallic output.
At this point, we can start to add the nodes necessary for this material, so from the Substance Designer library we need: the BnW Spots 2 and Cells 3 noises, the Height to Normal World Units filter, three Levels filters, a Blend filter, the Gradient Map filter that will give colour to the substance, and the Warp filter, a key element that will help us to mix the two noise generators.
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