Enemy spawner help with lengths

How can I get a count of child gameobjects by name (NOT BY TAG)? I made an enemy spawner that first looks for and counts tagged gameobjects named "ReSpawn", but then I need it to find and get a count of children in all those ReSpawns it finds with a specific name (Not Tag).

I am trying to construct a script for multiple enemy spawners. For each spawner I can drag and drop any type of enemy into a 'gameobject[]' string. Each spawner will first count how many enemies are active in the level by looking for a tag, and then if the enemy.length is below (x), it will(the idea, the part I need help with) check if the active enemies have a child with a name I manually enter through the inspector for each Spawner I place in the level.

This way I can place spawners in any area in a level, and it will spawn only the enemies I've put in its string, when its specific enemy count is down.

I hope my script is easy enough to catch the drift of my goal

     var ThisSpot : String; // what to name instantiates for this spawners area
 var Oppos : GameObject []; //drag and drop enemies I choose to intantiate here
 var OppoCount : GameObject [];
 var HowMany = 3; // how many enemies to spawn from this spawner
 var spawnSizeArea = 25;
 
 
 
 
 function Update () {
 
 OppoCount = GameObject.FindGameObjectsWithTag("Respawn");
 
 
 for ( ops in OppoCount){
 
 ops = transform.Find(ThisSpot).gameObject; // This is the problem. How do I correctly  
                                                 //get a count of child objects in 'ops' ??
 print(ops.length);
 
 if(ops.length < HowMany){ // if this specific spawners instantiates count is below 'HowMany', spawn more
 StartCoroutine ("Spawn");
 }
 }
 }
 
 
 
 function Spawn(){
 
 var length = Oppos.length-1;
 var index = Mathf.Round(length*UnityEngine.Random.value);
 curSpawn = Oppos[index]; // pick a random enemy to spawn from the 'Oppos' string each time
 
 var xz = Random.insideUnitCircle * spawnSizeArea;
 var newPosition = Vector3(xz.x,0,xz.x)+transform.position;
 
 yield WaitForSeconds(Random.Range(70,120)); // how long to wait between spawns
 
 
 var newOp : GameObject = Instantiate(curSpawn, newPosition, transform.rotation);
 
 newOp.transform.Find("fighter").name = ThisSpot; //name child object in string so you can find this specific spawners instantiates
 
 StopCoroutine("Spawn");
 }