How to put assests into an array

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class GameHandlerMapGeneration : MonoBehaviour { GameObject[] SpawnPointObj;

 GameObject[] Obstacles;




 public void Start()
 {
     SpawnPointObj = GameObject.FindGameObjectsWithTag("SpawnPoint");
     
     
     
     
     foreach(GameObject SpawnPoint in SpawnPointObj)
     {
         print(SpawnPoint.transform.position);
         int index = Random.Range(0, Obstacles.Length);
         GameObject ObjBeingSpawned = Obstacles[index];






     }

you see that game object array thing that is called Obstacles. I need that array to contain all the obstacles in my game (i have many objects like landmines speedbumps etc) but i have only 2 obstacles that are generateable. They are in the assets thing. They are in a folder called Obstacles. These obstacles are just groups of single objects. Like i have my first obstacle called 5 cones (its just 5 traffic cones) and 10 cones (its the same thing but more). i want these obstacles in the array but how???