JSFiddle - React, Tailwind, and code Playground

JavaScript

var myObj = [

    {'name': 'Mike', 'number' : 'b1' , 'level' : 0 },
    {'name': 'Tom',  'number' : 'b2' , 'level' : 0 }
];

var newObj = {};
newObj.names = {};
newObj.numbers = {};
newObj.levels = {};

for (var i in myObj) {
newObj.names.name = myObj[i].name;
newObj.numbers.number = myObj[i].number;
newObj.levels.level = myObj[i].level;
}

console.log(newObj);