What could it be that makes existentialism (and existentiality) humanistic?

More basically: What is existential-humanism?

In one sense, humanism is our belief system or ideology pertaining to humans. Existentialism, it has already been said, is the same but for existence.

Existential-humanism concerns–very simply–what we believe about human existence.

In the next post, we will offer a more precise answer for what this domain consists of.