Simple demo of the Link List node to do Marquee lights turning on in sequence. It uses duplicate objects since the texture cant be controlled directly without having one texture for each object to control. I just prefer to not have so many textures. Anyway, it turns off the off lights and turns on lights in sequence, the lights appear to turn on.
The same controls could do almost anything in sequence to a list of objects. I have provided another example where the xpresso controls actual lights inside transparent bulbs.