We have started publishing ready-to-use Geometry Based Atlas (GBA) for Substance 3D Sampler and Substance 3D Designer. We get more consistent Albedo, HeightMap and AO than standard atlases with GBA. Thus, we ensure full compatibility when GBA scans are added to photogrammetry surface scans. GBA scans are derived from a 3D Model with 300 Million Polygons and 3x 16K Textures. GBA scans have .SBSAR format, 8K resolution and 8 different maps. Available GBA scans include hundreds of rocks, mushrooms, debris, bricks, pinecones, asphalt patches.
You can look from here:
https://www.scanslibrary.com/library?category=source-gba