Объединение массивов в JS

  const arr1 = [
    ["name", "id", "age", "weight", "Cool"],
    ["Susan", "3", "20", "120", true],
    ["John", "1", "21", "150", true],
    ["Bob", "2", "23", "90", false],
    ["Ben", "4", "20", "100", true],
  ];

  const arr2 = [
    ["name", "id", "height"],
    ["Bob", "2", "50"],
    ["John", "1", "45"],
    ["Ben", "4", "43"],
    ["Susan", "3", "48"]
  ];

  const arr3 = [
    ["name", "id", "parent"],
    ["Bob", "2", "yes"],
    ["John", "1", "yes"]
  ];

const data = {};

function addData(arr, uuid = 'id'){
    const [headings, ...body] = arr;
    for(const elem of body){
        let id;
        let person = {};
        for(const [index, heading] of headings.entries()){
            if(heading === uuid){
                id = elem[index];
            }
            person[heading] = elem[index];
        }
        data[id] = {...data[id], ...person};
    }
}

addData(arr1);
addData(arr2);
addData(arr3);
console.table(data);