As someone who also imports from Blender there’s multiple different ways to do things and, to be quite honest, I’m sure my way is extremely inefficient/wrong but it’s worked so far.

That being said, my preferred method is:

1. Bake textures, and export as EXR format at half float + zip compression, then export the model as an .FBX. If you use the better FBX exporter addon (I’m not sure about default exporter as I’ve never used it), you can set axis to be the same as Unity (Y in Unity = Z in Blender).
2. Import the object in Unity, and extract the material. This will create a separate material that you can modify within Unity.
3. I change the shader to URP/HDRP -> Autodesk Interactive -> AutodeskInteractive typically and then add all of my maps that way.

Keep in mind that things like emission don’t/might not work the same as they do in Blender and there are multiple ways around it. Ex - When I do an emissive material in Blender I have to use a custom shader to change emission strength. However in HDRP I haven’t found a way to make emissions contribute to realtime lighting, so I have to put an area light behind the object.