[System.Serializable]
    public class TestDef
    {
       public string name;
       public Texture2D icon;
       public string description;
    }

public class MyMain
{
   public TestDef[] tests;

   private Hashtable testsList;

   void Start()
   {
      testsList = new Hashtable();
      foreach(TestDef test in TestDef)
      {
         testsList.Add(test.name, test);
      }
   }

   void SortList()
   {
      // Do you sort algorithm on 'tests'

      // Now you can iterate through 'tests' for sorted list
   }

   // Example for fetching by name using the Hahstable
   TestDef GetData(string byName)
   {
      if ( testsList.ContainsKey(byName) )
         return testsList[byName];

      return null;
   }
}

create a class like this,

[System.Serializable]
Class  Foo
{
  String name;
  Texture2D icon;
  String description;
}

and create a list
include this bfore that.

using System.Collections.Generic;

and in the code,

List<Foo> _fooList = new List<Foo>();

for(int i=0;i<_fooList.count;i++)
{
  print("My name is " + _fooList[i].name + " and " + _fooList[i].description);
}

I am serializing the class so that it would be visible in the editor too, so that it would be easy to add value frm scene or to debug.