Skills system - class design

Hello! I have a problem with my architecture design:

I have a class CardModel

 [System.Serializable]
 public class CardModel :Item {
     public float Cooldown;
     public int count;
 
 }
 
 
 
 
 then I have a 
 
 [System.Serializable]
 public class ShootingCardModel:CardModel
 {
     public BulletType BulletType;
     public float Damage;
 public int Firerate;
 
 }

In me Menu I generate Cards using for each on List

However I need to have in this list also ShootingCards (but I cant because the type is "CardModel" and in the inspector I cannot assign properties which are unique for ShootingCardModel). Please tell me, How can I do this? Maybe I should use another approach? I am really confused right now, so I will be glad if you could help me with this. Thank you in advance!