How can I create a template for New Project?

Hey everyone!
I'm creating textures for Unity and I have a problem with the templates when creating a new project:
So far, the normal textures on export work only properly with the "Unity HD Render Pipeline Metallic" material. If I want a specular material I need to start a project with "Unity HD Render Pipeline Metallic" and change rough and metallic against specular in the Texture Set Settings.

My question: Is it possible to save this texture set of my workflow as a template to start a new project with? Just like I can do when exporting textures.

Also: Why don't the export templates for textures match the import-options for new projects? While Unity has only one shader option to start with, I got 5 on texture export?

Thanks for your help!