Unmount and Eject all drives

Yes. I have just used Apple's Automator to do just that. It was really simple...I'm not a power user. This is what I used as my guide: https://www.techjunkie.com/automatically-eject-disks-at-boot-in-mac-os-x-with-automator/

It's also very easy to unmount devices using the Disk Utility.

That is unnecessary for normal shutdown

https://apple.stackexchange.com/questions/67251/is-it-necessary-to-eject-external-drives-before-logging-out-restarting-or-shut