I see Idealism as “goal oriented”.
It has a future focus.
The ideal is more “real” than the “real” to the ideal.
Intention would be an example of a flash of idealism.
No, it’s all part of the same philosophy. It’s integrated into our culture in many little ways. I don’t think it’s possible (or at all wise) to attempt to remove every speck of it in some kind of purity quest; considering how much of Western Civ leans upon Plato.