How to group and read an array using knockout.js data binding: with

I am trying to group an array

[{ "Name": "test1", "Other": "Junk" }, 
{ "Name": "test1", "Other": "Junk2" }, 
{ "Name": "test2", "Other": "Pile" }]

I am using the following method to group by attributes.

var groupBy = function (xs, key) {
return xs.reduce(function (rv, x) {
        (rv[x[key]] = rv[x[key]] || []).push(x);
        return rv;
    }, {});
};

My output is, "test1": {children info}, "test2": {one child info}

I am using Knockout.js to pass this information to a modal, I am using data-bind="with: results"

I'm just not sure how to display the result as

test1 - (2) count/length of *test1 test2 - (1) count/length of *test2

I've tried using data-bind="foreach: $parent" and that doesn't seem to work. I also tried setting the object as a parent called UnpackedItems and then using foreach on the UnpackedItems.. that didn't work either.

<div class="modal fade" id="myModal" data-bind="with: TheseUnpackedItems" tabindex="-1" role="dialog">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Unpacked Items</h5>
                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
            </div>
            <div class="modal-body">
                <table style="margin: auto;" class="table">
                    <tbody data-bind="foreach: UnpackedItems">
                        <tr>
                            <td>
                                <p class="form-control-static" data-bind="text: Name"></p>
                            </td>
                        </tr>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</div>

self.ShowUnpacked = function(vm) {

  var groupBy = function(xs, key) {
    return xs.reduce(function(rv, x) {
      (rv[x[key]] = rv[x[key]] || []).push(x);
      return rv;
    }, {});
  };

  const Property = "Name";
  const GroupedUnpackedItems = groupBy(vm.UnpackedItems, Property);

  var test = JSON.stringify(GroupedUnpackedItems);

  var m = { "UnpackedItems": GroupedUnpackedItems }

  self.TheseUnpackedItems(vm);
}

I don't get any errors, however, no data is actually displayed.