How i generate Gameobjects list?

 public void FilledList()
     {
 
         // All Accepted Trashtypes
         var trashcans = FindObjectsOfType<TrashDestroy>();
         generateTypes = new List<TrashType>();
         foreach (var can in trashcans)
         {
             foreach (var typ in can.acceptTypes)
             {
                 if (!generateTypes.Contains(typ))
                     generateTypes.Add(typ);
             }
         }
         print("types " + generateTypes.Count);
 
 
 
         // Filled list
 
 
         for (int M = 0; M < sizeOfList;)
         {
          
             var rnd1 = Random.Range(0, rightObjects.Count);
          
 
             if (generateTypes.Contains(rightObjects[rnd1].GetComponent<Trash>().kind))
             {
              
                 //rubbish.Add(rightObjects[Random.Range(0,rnd1)]  );
              
                 rubbish.Add(rightObjects[rnd1]);
 
                 print(rnd1);
                 M++;
 
                 print("Trash Added to list");
             }   
          
 
         }
 
 
         // Generate list.
 
         var lenOfList = rubbish.Count; // "lenOfList" is sizeof list.
         var TrashTyps = generateTypes.Count; // "TrashTyps" is all Accepted Trashtypes.
         var OneTrashTypeClass = lenOfList / TrashTyps; // "OneTrashTypeClass" is trashtypes left.
         var FinalTrash = lenOfList - OneTrashTypeClass * (TrashTyps - 1);
 
 
         print(lenOfList);
         print(OneTrashTypeClass);
         print(TrashTyps);
         print(FinalTrash);
 
         for (int W = 0; W < rubbish.Count; W++)
         {
             print("Do this if TrashTyps is left");
  
 
         }
 
         if (lenOfList > TrashTyps)
         {
             print("Do this if TrashTyps is left");
         }
 
         else if (TrashTyps < 0 && TrashTyps > 2 )
         {
             print("Last trashtype left!");
             print(OneTrashTypeClass);
          
            // var FinalTrash lenOfList - OneTrashTypeClass * (TrashTyps - 1);
             print(FinalTrash);
 
 
         }     
     }
 }   
             

I want Generate list of gameobjects with Trashtypes.

Examble is 5 Metal Trash and 5 Glass Trash. List count = 10

I want these objects list first all Metals and after this added all Glass Trash.

But how i doing it?