Rearranging pre-existing objcets into a grid

This really should be simple, but I can't seem to rap my head around the logic

I'm trying to create a grid using objects that already exist in the world. I can create a grid as the objects are instantiated just fine, but can't seem to do it with pre-existing objects

In my Hierarchy, I have an EmptyGameObject named "myEmptyGameObject" and it has 4 Child Objects

Here's my code

 //Re-arranges pre-existing objects into a Row, Column or Grid
 
 using UnityEngine;
 using System.Collections;
 
 public class listToGridTest : MonoBehaviour 
 {
     
     public float newY;
     public float newX;
     bool finishedSpawning;
     
     void Start() 
     {
         StartCoroutine(SortCoroutine());
     }
     
     // Update is called once per frame
     void Update () 
     {
         if (!finishedSpawning)
             return;
     }
 
 
     private IEnumerator SortCoroutine()
     {
         finishedSpawning = false;
         
         Transform otherGameObject = GameObject.Find("myEmptyGameObject").GetComponentInChildren<Transform>();
         
         int grids = otherGameObject.childCount;
         for (int i = 0 ; i <= grids - 1; i++)
         {
             for (int y = 2; y > 0; y--) 
             {
                 newY += y*2;
                 otherGameObject.GetChild(i).transform.position = new Vector3(newX, newY, 1);
                 
                 for (int x = 0; x < 2; x++) 
                 {
                     newX += x*2;
                     otherGameObject.GetChild(i).transform.position = new Vector3(newX, newY, 1);
                 }
                 yield return new WaitForSeconds(1f);
             }
         }
         
         finishedSpawning = true;
     }
 
 }
 

I seem to have hit a mental block