Is there a name for the philosophy that literally everything matters, including things that are of no concern or consequence to us?

To elaborate: <br><br>I recently discovered Jean Paul Sartre's concept of "Existentialism" which I found interesting. However, I was also intrigued by a semi-popular idea that suggests that literally everything matters. It appeared in my recommended YouTube content, so I took a look. The idea is that literally anything that is lived, experienced, or occurs at any moment in time matters. The way we walk down the street, the way we move with our surroundings, the way we breathe the air in our lungs matters. This philosophy is also concerned with the things that we cannot see or experience. It is concerned with the things that are of no concern to us, and the things that are outside our perception. This philosophy is very much existentialist, but it is existentialism on steroids. <br><br>I cannot think of a name for this philosophy. Has anyone else ever heard of such an idea?