For my final University project, I've been creating environment assets, props and textures for my team's game. I used Substance Designer to create the tiling textures used for the game, and for my other ArtStation post, showcasing a handful of the assets I've created.
https://www.artstation.com/artwork/98dWwo
All the textures use a base set of nodes I put together, which uses a tile sampler to create a 'brushstroke' effect. For each texture, I tweaked this sampler node to get different effects which would better suit the material I was making.
Most textures don't utilise a roughness or metallic, as in the game project we determine and tweak these attributes manually in Unreal Engine.