KaiStarkk

public abstract class EventBusBase
{
    protected readonly List<Object> _publishers = new();
    // More EventBus implementation.
    // Notably, doesn't have a member for the event, nor any methods
    // accessing the event, because it won't be possible to override
    // the event in sub-classes with different delegates. So most methods
    // have to be repeated as below.
    }
}

KaiStarkk

Type	Gen	Manufacturer	Name	# Games	Significance
Arcade		Namco	System 22
Arcade		Sammy	AtomisWave
Arcade		Sega	Hikaru
Arcade		Sega	Model 1
Arcade		Sega	Model 2
Arcade		Sega	Model 3
Arcade		Sega	NAOMI
Arcade		Sega	NAOMI 2