I have heard of Ubuntu! (Even Ubuntu communities, which sound like exactly what the world needs right now, more than ever.)
But I think, at the core, most spiritual traditions, teach similar concepts. Pages and pages of ACIM are devoted to the problems caused by ego, which one must relinquish in order to thrive spiritually.
It’s difficult. Obviously, I’m so not there. (I am well aware.) But it pains me to hear that you think my response is too egocentric. Still, I don’t deny it. This has been a struggle for me for years.