I see a lot of people who have footage folders littered with folders like "Sony A6500" or "20180108" to organize their clips.
With the automator workflows included below, you can organize all your footage in just one folder and have it so that it's easy to see the camera and date it was shot on, along with an optional description. For B-Roll, the date isn't important, so it just orders the files sequentially. (It'll ask for which number to start from)
Once the workflows are installed, you simply highlight the clips you want to rename and then right-click and find them towards the bottom of the right-click menu.
Example: 20180118_C-001_Sarni. This shows the date_camera-001_description. The workflow also removes filename extensions to remove clutter, if you want to keep the extensions just remove the AppleScript towards the bottom of the workflows in automator.