ScriptableRenderPipeline/com.unity.shadergraph/Editor/Data/Nodes/PropertyType.cs

namespace UnityEditor.ShaderGraph
{
    public enum PropertyType
    {
        Color,
        Texture2D,
        Texture2DArray,
        Texture3D,
        Cubemap,
        Gradient,
        Boolean,
        Vector1,
        Vector2,
        Vector3,
        Vector4,
        Matrix2,
        Matrix3,
        Matrix4,
        SamplerState
    }
}