gistfile1.cs

private Dictionary<string, Object[]> atlanten = new Dictionary<string, Object[]>();

function Start() {
   atlanten.Add("Leather", AssetDatabase.loadAll...);
}

function Update() {
  string type = ...
  
  if (!atlanten.ContainsKey(type))
  {
      Console.WriteLine(false);
  }
  else
  {
    Object[] atlas = atlanten[type];
  }
}