How to determine OnEnable execution order for components of the same type?

I have a SlotManager class that contains a List of slots.

I have 5 copies of a Slot class that OnEnable, adds itself to the slots List.

Each Slot is attached to a gameObject. I've named the gameObject Slot1, Slot2, Slot3, etc etc However, the Slot1 gameObject is not the first Slot class to add itself to the list.

• What determines the execution order for components of the same type?

• can I control the execution order?

For now I've manually renamed and reorganized the gameObjects. But I can see this being less than ideal in the future.