合并Laravel收集结果，聚合一个字段

我有一个具有重复结果的集合，但在相关字段中有不同的数据。我希望消除重复项，但通过组合该字段的值来保留其他数据。我似乎找不到一个好办法来做这件事。我的结果集如下所示：

"bankers" => Collection {#663 ▼
  #items: array:5 [▼
    0 => Collection {#465 ▼
      #items: array:5 [▼
        "banker_id" => 13
        "banker_name" => "John Banker"
        "type" => "lending"
        "deal_score" => 1
      ]
    }
    1 => Collection {#455 ▼
      #items: array:5 [▼
        "banker_id" => 62667
        "banker_name" => "Harvey Aandreau"
        "type" => "lending"
        "deal_score" => 0
      ]
    }
    2 => Collection {#419 ▼
      #items: array:6 [▼
        "banker_id" => 13
        "banker_name" => "John Banker"
        "type" => "quotes"
        "deal_score" => 1
      ]
    }
    3 => Collection {#410 ▼
      #items: array:6 [▼
        "banker_id" => 297
        "banker_name" => "Melissa Jablonsky"
        "type" => "quotes"
        "deal_score" => 1
      ]
    }
  ]
}

我想删除第二个重复的“John Banker”，但将“type”字段的值添加到上一个记录中，如：

"bankers" => Collection {#663 ▼
  #items: array:5 [▼
    0 => Collection {#465 ▼
      #items: array:5 [▼
        "banker_id" => 13
        "banker_name" => "John Banker"
        "type" => "lending, quotes"
        "deal_score" => 1
      ]
    }
    1 => Collection {#455 ▼
      #items: array:5 [▼
        "banker_id" => 62667
        "banker_name" => "Harvey Aandreau"
        "type" => "lending"
        "deal_score" => 0
      ]
    }
    3 => Collection {#410 ▼
      #items: array:6 [▼
        "banker_id" => 297
        "banker_name" => "Melissa Jablonsky"
        "type" => "quotes"
        "deal_score" => 1
      ]
    }
  ]
}

我需要维持目前的秩序。如果需要，“类型”字段可以更改为数组。如果您有任何建议，我们将不胜感激。

感谢您提供以下建议：

$bankers->groupBy('banker_name')->map(function ($bankers) {
    return array_merge($banker[0]->all(), [
        'type' => $bankers->pluck('type')->implode(',');
    ]);
});

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无法对如何调用此数组进行后期编码