Unused assets in Asset Bundles / Workflow questions

Say I want to split my game into 5-6 asset bundles. Let's say separate my game by asset type (so one bundle is all textures, another all audio, another all meshes etc).

What is the workflow for that?

Do I download asset bundle browser and then do t:texture on the project view and drag them all in to create a bundle?

Wouldn't that also add unused textures in the asset bundle that would normally be stripped from the build, resulting in my game overall taking more size? Is there a workflow to avoid doing that?