Nietzsche Schopenhauer and others reference Samkhya. It’s definitely had an influence but it’s definitely subterranean. Western philosophers all want to sound scientific and using old eastern phenomenology somehow undermines that.

So much eastern philosophy is just really good phenomenology, and some Japanese philosophers like Nishida tried to combine Husserl and Buddhism, but it’s the same thing, I think western phenomenologists have some sort of insecurity, so they implicitly condescend to the eastern thought.