The Concept of Intentionality

Monhanty's book The Concept of Intentionality is of course a brilliant book. However, I think a methodological introduction will be necessary. 1. Phenomenological Method has essentially two steps, first, Phenomenological Reduction, and second, Eidetic Variation, each serves its particular purpose. 2. I think if we talk about the Concept of Intentionality, it would be nice if we have Gilbert Ryle's project of the Concept of Mind in mind, a sustained essay on mental concepts. Now, we have a sustained essay on intentional concepts.
Are all mental concepts intentional concepts? Like perception, knowing, willing, etc. Ok, now we have Searle's project.