I consider the following to be a “work in progress,” and will make changes as others here contribute corrections and suggestions.
The so-called “mind-body problem”, as bequeathed to us by Descartes, has invited various solutions over the centuries. In the classical version, the basic positions were dualism, materialism, and idealism — each of which has its sub-varieties.
What is meant by “mind”? Well, there are characteristically mental phenomena have been presented as candidates for what is essential to mindedness: rationality, intentionality, subjectivity, volition, or consciousness. (That these don’t all overlap can be seen by asking, “are there unconscious mental states or processes?”, “what sorts of minds do non-rational animals have?” “are there purely qualitative, non-intentional mental states, e.g. pains?” and so on.)