Ordinary stairs would've been just that - ordinary. The whole point is that this thing is supposed to look extraordinary.

All it takes is a director saying 'These stares need to POP! They've gotta draw our eyes up every step! They need more detail!' and some set designer cuts pattern into them.

The flight of the navigator example is particularly creepy given the subtext one could see in the film, but this stuff could so easily be coincidence that it's almost pointless to point it out, because it will just make you look like a crazy in the eyes of normies.