So, I'm well aware of the awesome Painter-Sketchfab exporter and it indeed does what it's designed for very well. However, for my scene I'm working on multiple materials and have to export the materials individually and upload the textures to Sketchfab one by one. Cumbersome, but given that at no single point is my entire scene in Painter (obviously), it's the best workflow I've come up with.
Given that workflow, which export preset is best to pick in Painter? SpecGloss? MetalRough? Which will give me the closest maps to the ones Sketchfab works well with? So far SpecGloss seems to hit the closest to the mark but I thought I'd run it by you because you probably have additional insight...