Glossy is different from a Metallic Shader, but again, the difference is not overwhelming.
Here, from left to right, ‘real’ metal (with complex IOR, available since Blender 4.3), Glossy and ‘normal’ Metallic Shader. I made as close in color as I could:

You can probably get away with using a Glossy BSDF for Metals, as you say.