I'm not sure what exactly the term for what I'm trying to do is, but I will refer to what I am trying to do as a "cascading light" effect (a light that looks like it's going "downwards" at a consistent speed).
Basically, I am trying to light up certain redstone lamps on a 2D panel of lamps at different times, with each light being lit up the exact same amount of time.
To be a bit more specific, I am dealing with a panel of lights that's comprised of mainly a 11x3 rectangle of redstone lamps, with 7 lamps sticking out around the bottom of the shape (see below image for more details. Also, sorry if the drawings aren't too high quality, they're only here as simple visuals)
The lights will appear to sort of "cascade" towards the bottom of the structure, by lighting up the redstone lamp directly below the already-lit lamp after an interval of time. There will be no delay after some of the lamps are lit; rather, the next set of lamps will light up directly after the initial set.
There are a total of 11 sets of lamps to be lit up, with the first set being only one lamp, the second to ninth sets being comprised of 3 lamps each, set #10 is 5 lamps, and the last set (#11) is 7 lamps. (image below detailing this)
Video: (timestamp: 4:49)
I am playing on vanilla Minecraft, Java Edition, on 1.14.4, and I'd prefer if the redstone circuit did not stretch past the panel of lights, but I can take any design as long as it works. Also, you can change the shape of the panel too, as long as the cascading pattern is still present. Thanks!