You could say the same of Bespin, seems like just the one city surrounded by endless clouds. Same for Hoth & Endor, they’re all very basic. Yeah Tatooine is a bit more fleshed out, but likewise Jakku seems pretty alive, the masive wreckages tell the story of a battle long past, we get a day in the life of a scavenger that shows the regular routine on Niima Outpost (which looks pretty alive and busy), and there’s also talk of Sinking Fields, Kelvin Ridge & the Goazon Badlands.

The one thing Jakku doesn’t have much is wildlife, which I feel is intentional in making the planet feel desolate, but still we see that red-eyed “Kojima” alien, that pecking vulture creature (a literal “scavenger”), and the giant pig drinking the water, though that one seems more domestic.

Saying Jakku is only a junkyard and a village is like saying Tatooine in ANH is only a Moisture Farm and a Spaceport. And as you said Ahch-to is like the inverse of Jakku, teeming with all sorts of wildlife, including those cool skeletons that made Tatooine feel so alive.