"My philosophy, in essence, is the concept of man as a heroic being, with his own happiness as the moral purpose of his life, with productive achievement as his noblest activity, and reason as his only absolute."
This was Aristotle's "qua Man."
Any idea that tells you the purpose of morality is your own happiness but NOT at the expense of any other human--is automatically, epistemologically sound, as well as being metaphysically enlightening. I call THAT philosophy.
"I know not if this earth on which I stand is the core of the universe or if it is but a speck of dust lost in eternity. I know not and I care not. For I know what happiness is possible to me on earth."
That is the best refutation for "all we are is dust in the wind" that I've ever heard, and I'll bet you believe that THAT is philosophy.
"Your self is your mind; renounce it and you become a chunk of meat ready for any cannibal to swallow."
You are the cannibal. I refuse to be your meat.
"I stand here on the summit of the mountain. I lift my head and I spread my arms. This, my body and spirit, this is the end of the quest. I wished to know the meaning of things. I am the meaning. I wished to find a warrant for being. I need no warrant for being, and no word of sanction upon my being. I am the warrant and the sanction."
That was Stoicism at its Aristotilean best. THAT is the best defense of individualism as spiritualism. No one believes Rand was spiritual, but everything she wrote was of the spirit of "qua Man," an idea of Aristotle's.
The Stoics were great spiritualists, as well. Read Marcus Aurelius.
If her ideas came from Aristotle, was Aristotle also NOT a philosopher?
Oh, and by the way, if she contributed NOTHING to philosophy, who do all the authors listed in this link have anything to say about her? Do you wish to count the authors? I certainly do not. Look at their names and you will not discount all of them.
You might even find some on the list you already appreciate.
http://enlightenment.supersaturated.com/essays/essays.html