Nietzsche is not an existentialist philosopher first point.
Nietzsche is a paradox philosopher, in hyperbola, labyrynth.
Nietzsche does not suppose anything exists, but Her, I guess Fate-he does not believe in her though, like a religion, he just supposes.
He doesn't support existentialism, his first thoughts on other philosophers like kierkergaard but not limited to, nothing personal.
On Existentialism: Oh well I'm sort of teaching here but, his philosophy was in question with a series of strong retorts by a man named Kant, who practically deified himself, who supposes reason only quite like Nietzsche while being an "existential philosopher". First faith is Jesus obviously. Faith above others is Law not Reason. Is first faith a law, then it is above reason. It seems to be already set, interogative, my best guess, of the theism of existential reasoning who first supports: there says, laws, and above reason are laws, like faith, which is a law and not the man's personal teaching. There seems to be a set of reasoning involved, where he states it; first law above reason, first law Christ or Jesus, in their opinion, so there is nothing to say about it but that it is exactly existential reasoning, and not a retort, the classics. His statement is fact not reason.
Is first faith a law, then it is above reason. In existentialism, questions are ideas.
However, existentialism whos first faith is reason seems to support a beyond time theme: Kant, is a beyond man. Or Nietzschean sort of, why Nietzsche picked on him a lot.
Meanwhile Nietzsche supposed that all existential philosophers, not merely Kant, were only moralisms and nothing else, nothing wise.
Existential philosophers: Kant, Gande
Nietzsche hates Kant. Kant died.