If the maps are named properly, the node wrangler addon will set up the rest for us like this. The ultimate reference workflow in a nutshell.

Texture Chapter Set all your texture maps to non-color data except the base color. Feasible and quick approximations of the bidirectional reflectance distribution function and rendering equation are of mathematical importance in this field.

The metallic input also dictates how other parameters of the principled shader behave. The term is bandied about a lot, often generating confusion as to what exactly it means.