Question .mtl not mapping textures for URP?

Currently have this .mtl with matching textures in the same directory as the .obj, but the URP standard lit shader is only mapping the Base Map value and not any of the others. Also I noticed the smoothness and metallic sliders as at their defaults as well, even though I set Ks to 1.0 in the mtl. I am using 2019.4.0f1

Code (csharp):

1. newmtl Serena
2. Ns 225.000000
3. Ka 1.000000 1.000000 1.000000
4. Kd 0.800000 0.800000 0.800000
5. Ks 1.000000 1.000000 1.000000
6. Ke 0.000000 0.000000 0.000000
7. Ni 1.450000
8. d 1.000000
9. illum 2
10. map_bump Serena_Normal.png
11. map_Kd Serena_Albedo.jpg
12. map_Ks Serena_MR.png
13. map_Ka Serena_AO.jpg

I would like to know how I should be formatting the .mtl file for these so that they automatically map to their fields and I won't have to mess with extracting the material, thanks!

Results currently: