Whether this was done on-camera or in post, there's color grading happening here. The moody, almost film-like quality present in these pictures is also really popular in high production TV shows right now. Also a good eye for fun compositions, like the shot with the wall/barrier present in the left to offer the feeling of being closed or restricted.
Notice how the shadows are somewhat teal-tinged and the contrast is toned down. There may or may not be some grain or vignetting added in post as well. There are Lightroom color profiles that can get this sort of color feel on application. But the compositions and natural lighting are pure photographer skill to chase.