When importing SBSAR materials into the content browser, you can choose the different material templates in the drop down that are available out-of-the-box.

Substance Standard Template

This is a basic material template for a generic UV experience. It provides some basic controls of UV amounts so you can scale the UVs to stretch textures. You can split the UV scaling by enabling the split UV option, you also have U amount, V amount, UV offset, and a UV rotation angle. This allows you to do some UV tiling as well as UV rotation.

Substance Triplanar Template

The tirplanar template does a triplanar mapping of the X, Y, and Z angles or faces of the mesh so it blends together three different projections of the textures to seamlessly blend the angles. Triplanar template allows materials to blend together across the different faces as the object bends

The triplanar template has physical size support, so when physical size is enabled, the triplanar template scales the images based on the physical size of the material, so no matter how much you scale your object, that texture will always remain the same and have a uniform look. Learn more Physical Size here: Physical Size - UE5

Substance Refraction Template

The refraction template is mainly used for transparent objects, for example, glasses. It allows you to modify the IOR value or standard textures that you would have for a glass material or transparent material.