It may be a cliché, but it’s still sometimes true: great minds think alike.
Consider this: In Cary Groner’s post-apocalyptic speculative fiction novel The Way (hardcover, Kindle, audiobook), a man has to transport the cure to a deadly illness through a post-apocalyptic America, and he’s joined by a teenage girl. Which sounds a lot like the plot of the post-apocalyptic action / adventure game The Last Of Us and the HBO show it inspired.
But as Groner explains in the following email interview, any connections between his novel and Us are purely superficial. Though it did prompt a name change.