Is the philosophy of idealism (in the quite broad sense, so including Platon, Leibniz, and the so-called German idealism with Kant, Fichte, etc.), somehow a kind of spiritualism?

Below is provided a definition of philosophical idealism (from the article "Idealism" by the Stanford Encyclopedia of Philosophy):

Within modern philosophy there are sometimes taken to be two fundamental conceptions of idealism:

(1) something mental (the mind, spirit, reason, will) is the ultimate foundation of all reality, or even exhaustive of reality, and

(2) although the existence of something independent of the mind is conceded, everything that we can know about this mind-independent “reality” is held to be so permeated by the creative, formative, or constructive activities of the mind (of some kind or other) that all claims to knowledge must be considered, in some sense, to be a form of self-knowledge.

Idealism in sense (1) has been called “metaphysical” or “ontological idealism”, while idealism in sense (2) has been called “formal” or “epistemological idealism”.

The notion of "spiritualism" seems not as fixed as it might appear as first sight. In order to ease the discussion, two definitions which correspond to the intuition alluded in the question are provided:

1 : the view that spirit is a prime element of reality (Merriam Webster)

Philosophy the doctrine that the spirit exists as distinct from matter, or that spirit is the only reality. (Oxford Languages, from Google search)

But the question is opened to other understandings of spiritualism, if judged relevant.

Nb: (a) I am not a native speaker of English, so I might be incorrect in my use of the term "spiritualism". User Wayfarer nicely suggested the term might be "spirituality".

(b) I don't have peculiar references to add to my post, since this question raises from many personal readings of different sorts concerning the philosophy of idealism.

Can the philosophy of idealism (in the quite broad sense, so including Platon, Leibniz, and the so-called German idealism with Kant, Fichte, etc.), be equated with supernaturalism?

Below is provided a definition of philosophical idealism (from the article "Idealism" by the Stanford Encyclopedia of Philosophy):

Within modern philosophy there are sometimes taken to be two fundamental conceptions of idealism:

(1) something mental (the mind, spirit, reason, will) is the ultimate foundation of all reality, or even exhaustive of reality, and

(2) although the existence of something independent of the mind is conceded, everything that we can know about this mind-independent “reality” is held to be so permeated by the creative, formative, or constructive activities of the mind (of some kind or other) that all claims to knowledge must be considered, in some sense, to be a form of self-knowledge.

Idealism in sense (1) has been called “metaphysical” or “ontological idealism”, while idealism in sense (2) has been called “formal” or “epistemological idealism”.

The notion of "supernaturalism" as defined by [Britannica][2]:

supernaturalism, a belief in an otherworldly realm or reality

Is the philosophy of idealism (in the quite broad sense, so including Platon, Leibniz, and the so-called German idealism with Kant, Fichte, etc.), somehow a kind of spiritualism?

The notion of "spiritualism" seems not as fixed as it might appear as first sight. In order to ease the discussion, two definitions which correspond to the intuition alluded in the question are provided:

1 : the view that spirit is a prime element of reality (Merriam Webster)

Philosophy the doctrine that the spirit exists as distinct from matter, or that spirit is the only reality. (Oxford Languages, from Google search)

But the question is opened to other understandings of spiritualism, if judged relevant.

Nb: (a) I am not a native speaker of English, so I might be incorrect in my use of the term "spiritualism". User Wayfarer nicely suggested the term might be "spirituality".

(b) I don't have peculiar references to add to my post, since this question raises from many personal readings of different sorts concerning the philosophy of idealism.

Is the philosophy of idealism (in the quite broad sense, so including Platon, Leibniz, and the so-called German idealism with Kant, Fichte, etc.), somehow a kind of spiritualism?

Below is provided a definition of philosophical idealism (from the article "Idealism" by the Stanford Encyclopedia of Philosophy):

Within modern philosophy there are sometimes taken to be two fundamental conceptions of idealism:

(1) something mental (the mind, spirit, reason, will) is the ultimate foundation of all reality, or even exhaustive of reality, and

(2) although the existence of something independent of the mind is conceded, everything that we can know about this mind-independent “reality” is held to be so permeated by the creative, formative, or constructive activities of the mind (of some kind or other) that all claims to knowledge must be considered, in some sense, to be a form of self-knowledge.

Idealism in sense (1) has been called “metaphysical” or “ontological idealism”, while idealism in sense (2) has been called “formal” or “epistemological idealism”.

The notion of "spiritualism" seems not as fixed as it might appear as first sight. In order to ease the discussion, two definitions which correspond to the intuition alluded in the question are provided:

1 : the view that spirit is a prime element of reality (Merriam Webster)

Philosophy the doctrine that the spirit exists as distinct from matter, or that spirit is the only reality. (Oxford Languages, from Google search)

But the question is opened to other understandings of spiritualism, if judged relevant.

Nb: (a) I am not a native speaker of English, so I might be incorrect in my use of the term "spiritualism". User Wayfarer nicely suggested the term might be "spirituality".

(b) I don't have peculiar references to add to my post, since this question raises from many personal readings of different sorts concerning the philosophy of idealism.

Is the philosophy of idealism (here I mean in the quite broad sense, so I include Platon, Leibniz, and the so-called German idealism with Kant, Fichte, etc.), somehow a kind of spiritualism?

I don't have peculiar references to add to my post, since this question raises from many personal readings of different sorts concerning the philosophy of idealism.

The notion of "spiritualism" seems not as fixed as it might appear as first sight. In order to ease the discussion, I provide two definitions which correspond to the intuition alluded in my question:

1 : the view that spirit is a prime element of reality (Merriam Webster)

Philosophy the doctrine that the spirit exists as distinct from matter, or that spirit is the only reality. (Oxford Languages, from Google search)

But the question is opened to other understandings of spiritualism, if judged relevant.

Nb: I am not a native speaker of English, so I might be incorrect in my use of the term "spiritualism". User Wayfarer nicely suggested the term might be "spirituality".

Is the philosophy of idealism (in the quite broad sense, so including Platon, Leibniz, and the so-called German idealism with Kant, Fichte, etc.), somehow a kind of spiritualism?

The notion of "spiritualism" seems not as fixed as it might appear as first sight. In order to ease the discussion, two definitions which correspond to the intuition alluded in the question are provided:

1 : the view that spirit is a prime element of reality (Merriam Webster)

Philosophy the doctrine that the spirit exists as distinct from matter, or that spirit is the only reality. (Oxford Languages, from Google search)

But the question is opened to other understandings of spiritualism, if judged relevant.

Nb: (a) I am not a native speaker of English, so I might be incorrect in my use of the term "spiritualism". User Wayfarer nicely suggested the term might be "spirituality".

(b) I don't have peculiar references to add to my post, since this question raises from many personal readings of different sorts concerning the philosophy of idealism.