Serious: Stanislaw Lem: the first one to introduce and treat the idea of the extraterrestrial space signal with coded biological substance and the concept of de-aggressing of human nature

Both ideas: about the space signal with coded biological substance and de-aggressing and all of the human kind were greatly materialised by Stanislaw Lem 60 and more years ago.

Enjoy:

https://en.wikipedia.org/wiki/His_Master%27s_Voice_(novel))

and

https://en.wikipedia.org/wiki/Return_from_the_Stars

And here follow several sources relating to the third component of the pluribus tv show, namely the omnipresent happiness, introduced and treated by Stanislaw Lem in his short SF story by the name of Altruizine, or A True Account of How Bonhomius the Hermetic Hermit Tried to Bring About Universal Happiness, and What Came of It.

https://repub.eur.nl/pub/106433/106433_1-General_introduction.pdf

https://www.empathogens.com/altruizine/index.html

So, summing it up, these are the three pillars Vince Gilligan stepped on creating his pluribus tv show.