In order of size I'd go with:
You add things as the duration of use goes up e.g. simple first aid kit in GOO gets larger as the bag gets bigger.
I'd add a GOO bag - get out of office. Think about an earthquake or fire in the office. It would include items that get you to your car or just ot of the building ... multitool flashlight,filled water bottle, safety glasses, mask, simple first aid kit, power bar.
EDC - add cutting edge, gun,
GHB - add good hiking shoes and other warmer clothing
GTS - This is a bag that gets you to a storage area between work and home. A lot of people live very long distances from work. Having a storage area along the way for sleep and re-supply might work. Also, you could keep a bike or ebike in it - travel at night!
BOB - Add shelter and water purification - People usually go too heavy with this bag. You want light so you can go fast.