JSFiddle - React, Tailwind, and code Playground

HTML

Common properties:
<div id="results"></div>

JavaScript

const object1 = {
    "gender": "man",
    "age": 33,
    "origin": "USA",
    "jobinfo": {
        "type": "teacher",
        "school": "Wisconsin"
    },
    "children": [
        {
            "name": "Daniel",
            "age": 12,
            "pets": [
                {
                    "type": "cat", 
                    "name": "Willy",
                    "age": 2
                },
                {
                    "type": "dog", 
                    "name": "jimmie",
                    "age": 5
                }
            ]
        },
        {
            "name": "Martin",
            "age": 14,
            "pets": [
                {
                    "type": "bird", 
                    "name": "wagner",
                    "age": 12
                }
            ]
        }
    ],
    "hobbies": {
        "type": "football",
        "sponsor": {
            "name": "Pepsi",
            "sponsorAmount": 1000,
            "contact": {
                "name": "Leon",
                "age": 59,
                "children": [
                    {
                        "name": "James",
                        "pets": [
                            {
                                "type": "dog",
                                "age": 4
                            }
                        ]
                    }
                ]
            }
        }
    }
}

const object2 = {
    "gender": "man",
    "origin": "USA",
    "jobinfo": {
        "type": "teacher"
    },
    "children": [
        {
            "name": "Daniel",
            "age": 12,
            "pets": [
                {
                    "type": "cat", 
                    "name": "Willy",
                    "age": 2
                },
                {
                    "type": "dog", 
                    "name": "jimmie",
                    "age": 5
                }
            ]
        }
    ]
}

function findCommonProps(obj1, obj2) {
    var map1 = {}, map2 =...