Trying to track the BoxColliders of 2 Different Sets of Instantiated GameObjects

Basically I have dynamically spawning (instantiated) "enemies" that will each have their own BoxCollider2D's. I also have instantiated projectiles coming from my player with their own unique BoxCollider2D's as well. I have been trying to think of a way to dynamically track these colliders, since they have no unique properties to track individually. Is it possible to group them? For example: "if a collider from the group of projectile boxcolliders touches a collider from the group of enemy colliders ..etc". I am still learning the in's and out's of Unity Engine, so I may just be overlooking a tool they already provided. Can someone please give me insight on how to accomplish this, or at least where to start? Thanks! (Also if this code has a horrible flaw, please point it out so I can fix my mistake)

Here is my code for the projectile (animations are handled in another script):

 public class Projectile : MonoBehaviour {
 
     public GameObject projectilePrefab;
     public float speed = 0f;
     private Rigidbody2D playerRigid;
     private Rigidbody2D cloneRigid;
     private GameObject clone;
     private MovementScript playerMove;
     private Animator animate;
     private Vector2 projectileSpeed;
     private bool shot = false;
 
     void Start () {
         playerRigid = GetComponent<Rigidbody2D>();
         playerMove = GetComponent<MovementScript>();
         animate = GetComponent<Animator>();
     }
     
     void Update () {
         //If Player is facing right, adjust projectile direction on x axis.
         if (playerMove.faceDirection) {
             projectileSpeed = new Vector2(1 * speed, 0);
         }
         //If Player is facing left, reverse projectile direction on x axis.
         else if (!playerMove.faceDirection){
             projectileSpeed = new Vector2(-1 * speed, 0);
         }
        //isThrowing is handled in another script. It basically handles the cooldown time between throws.
         if (playerMove.isThrowing) {
             if (!shot) {
                 shoot();
                 shot = true;
             }
         }
         else if (!playerMove.isThrowing) {
             shot = false;
         }
     }
 
     //Instantiates the object using the projectile prefab, then rotates/scales it accordingly and projects it outwards.
     void shoot() {
         //Instantiates the projectile, and gets components of the clone to work with.
         clone = (GameObject)Instantiate(projectilePrefab, playerRigid.position, Quaternion.identity);
         cloneRigid = clone.GetComponent<Rigidbody2D>();
         Transform cloneTrans = clone.GetComponent<Transform>();
 
         //Rotates the sprite so it visually flies in the correct direction
         if (playerMove.faceDirection) {
             cloneTrans.Rotate(0, 0, 270);
         }
         else {
             cloneTrans.Rotate(0, 0, 90);
         }
         //Scales the sprite to a feasable size
         cloneTrans.localScale = new Vector3(15, 13, 1);
 
         //Applies velocity and destroy clone after 3.5 seconds
         cloneRigid.velocity = projectileSpeed;
         Destroy(clone, 3.5f);
     }
 }