ReverseLinq.cs

var list = new List<Example>{
	new Example{
		Id = 1,
		Description = "First Level",
		Type = 4,
		ParentId = 0
	},
		new Example{
		Id = 2,
		Description = "Second Level",
		Type = 3,
		ParentId = 1
	},
		new Example{
		Id = 3,
		Description = "Third Level",
		Type = 2,
		ParentId = 2
	},
		new Example{
		Id = 4,
		Description = "Last Level",
		Type = 1,
		ParentId = 3
	},
		new Example{
		Id = 5,
		Description = "First Level",
		Type = 4,
		ParentId = 0
	},
		new Example{
		Id = 6,
		Description = "Second Level",
		Type = 3,
		ParentId = 5
	},
		new Example{
		Id = 7,
		Description = "Third Level",
		Type = 2,
		ParentId = 6
	}
}

Condition => where(c => c.Type = 1)


Expected Result (Array or list result)
[
	{
		Id = 4,
		Description = "Last Level",
		Type = 1,
		ParentId = 3
	},
	{
		Id = 3,
		Description = "Third Level",
		Type = 2,
		ParentId = 2
	},
	{
		Id = 2,
		Description = "Second Level",
		Type = 3,
		ParentId = 1
	},
	{
		Id = 1,
		Description = "First Level",
		Type = 4,
		ParentId = 0
	}
	
]

Cara blz
Eu estou fazendo algo deste genero veja se ajuda...

  string userRoot = userId;

  foreach (var config in Configs.OrderBy(p => p.Level))
  {
    var user = this.UserManager.FindById(userRoot);

    if (user == null || string.IsNullOrEmpty(user.RootId) || ConfigurationManager.AppSettings["SystemId"].ToString() == user.RootId)
    { break; }

    var paymentAssociate = new PaymentsAssociated
    {
      Level = config.Level,
      UserId = user.RootId,
      DateRegister = DateTime.Now
    };

    this.PaymentsAssociatedService.Add(paymentAssociate);
    userRoot = user.RootId;
  }