Jose Ortega y Gasset is one of my favorite philosophers. But I think you, and most books leave out his most important contributions to philosophy.

In the Dehumanization of Art, he says art goes from being based on human perspective, realism, to becoming more and more abstract. Modern art is totally abstract and no longer represents any human perspective. Modernity loses realism and becomes idealism. Modernity and later Postmodernity is based not on objective reality, but on maps of objective data which are not real, but ideal. This later led to Baudrillard and 'Simulations', but Gasset came up with this idea first.

Based on this, in my philosophy, I call science and Modernism 'Objective Idealism', and Postmodernism 'Intersubjective' or Social Idealism. Both do not refer back to reality and truth, but rather to abstract maps and metaphors. I believe, like Gasset, that reality requires a human perspective.

When I was in grad school I used Gasset's "Phenomenological Analysis" as a form of interaction design for architecture. I called it 'Person-Centered Design'. Most UX designers use some form of simplified phenomenological analysis today. I'm sure most don't know where it comes from.