Some samples of "Procedural" materials I made for Paragon Monolith. Idea was to speed up meshing and overall process by giving to artists almost no needs to do actual texture work. So env artist was providing Low Poly mesh, one texture mask and normal map, the rest shader will care. Almost like some smart materials in Substance painter.

You can download and use for your project from the Marketplace
https://www.unrealengine.com/marketplace/paragon-agora-and-monolith-environment