Most of the recent DAZ figures load with the Age of Armor SSS Shader applied, some post-Iray default to the Iray Uber Shader but have 3Delight settings using the AoA SSS Shader. Before we had that uber Surface was widely used, it's only when you go back beyond that that humans tend to use the Default DAZ Shader. Props are more likely to use the default shader as they often don't need the advanced features, depending on what they are meant to be made of.