using System;

using System.Collections.Generic;

using System.Linq;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        string json = @"

            {

              ""Array1"": {

                ""Array1A"": [

                  { ""Item1"": ""1"" },

                  { ""Item2"": ""2"" },

                  { ""Item3"": ""3"" }

                ],

                ""Array1B"": [

                  { ""Item1"": ""1"" },

                  { ""Item2"": ""2"" },

                  { ""Item3"": ""3"" }

                ]

              },

              ""Array2"": {

                ""Array2A"": [

                  { ""Item1"": ""1"" },

                  { ""Item2"": ""2"" },

                  { ""Item3"": ""3"" }

                ]

              },

              ""Array3"": {

                ""Array3A"": [

                  { ""Item1"": ""1"" },

                  { ""Item2"": ""2"" },

                  { ""Item3"": ""3"" }

                ],

                ""Array3B"": [

                  { ""Item1"": ""1"" },

                  { ""Item2"": ""2"" },

                  {

                    ""Array3B1"": [

                      { ""Item1"": ""1"" },

                      { ""Item2"": ""2"" },

                      { ""Item3"": ""3"" }

                    ]

                  }

                ],

                ""Array3C"": [

                  { ""Item1"": ""1"" },

                  { ""Item2"": ""2"" },

                  { ""Item3"": ""3"" }

                ]

              }

            }";

        List<JObject> list = 

            JObject.Parse(json)

            .Descendants()

            .Where(jt => jt.Type == JTokenType.Property && ((JProperty)jt).Value.HasValues)

            .Cast<JProperty>()

            .Select(prop =>

            {

                var obj = new JObject(new JProperty("Name", prop.Name));

                if (prop.Value.Type == JTokenType.Array)

                {

                    var items = prop.Value.Children<JObject>()

                                          .SelectMany(jo => jo.Properties())

                                          .Where(jp => jp.Value.Type == JTokenType.String);

                    obj.Add(items);

                }

                var parentName = prop.Ancestors()

                                     .Where(jt => jt.Type == JTokenType.Property)

                                     .Select(jt => ((JProperty)jt).Name)

                                     .FirstOrDefault();

                obj.Add("Parent", parentName ?? "");

                return obj;

            })

            .ToList();

        for (int i = 0; i < list.Count; i++)

        {

            Console.WriteLine("list[" + i + "]:");

            Console.WriteLine(list[i].ToString(Formatting.None));

            Console.WriteLine();

        }

    }

}