Swap ScriptableObject List Components

Hello, I am attempting to write an editor script that will allow me to swap the list order of components to move them up and down.

The code I use to do this is

     using UnityEngine;
     using System.Collections;
     using System.Collections.Generic;
     using System.Linq;
     
     
     internal static class ExtensionMethods 
     {
     
         public static void Swap<T>(this IList<T> list, int indexA, int indexB)
         {
             T tmp = list[indexA];
             list[indexA] = list[indexB];
             list[indexB] = tmp;
         }
     }
 

So when I attempt to call this on any other list type (such as int, GameObject, Collider, etc.) I write

listName.Swap(i, i + 1);

and it works. However, with a list of Scriptable Objects I get the following error message...

error CS1061: Type System.Collections.Generic.List' does not contain a definition for Swap' and no extension method Swap' of type System.Collections.Generic.List' could be found (are you missing a using directive or an assembly reference?)

I've tried swapping out IList for List, I tried replacing the T with the ScriptableObject type none of that worked...

Any advice on what needs to be done to make this work on ScriptableObject lists??