Accessing hidden font parameters for Custom Editor

I am trying to create an improved custom editor for custom fonts. The base of my source is below:

 using UnityEngine;
 using UnityEditor;
 using System.Collections;
 
 [CustomEditor(typeof(Font))]
 public class CustomFontEditor : Editor {
 
 
     void Awake(){
     }
 
     public override void OnInspectorGUI()
     {
         base.OnInspectorGUI();
         Font font = (Font)target;
     }

Now this works as expected in terms of it triggering when editing a font in the Inspector. However there are properties in the Font that show up in the base inspector which I can't seem to find in the Font class itself, namely:

• Ascii Offset

• Kerning

• Line Spacing

• Character Spacing

• Character Padding

• Convert Case

The only exposed properties are:

• Ascent read only

• Character Info[] read/write

• Dynamic read only

• Font Name read/write

• Font Size read only

• Hide Flags read/write

• Line Height read only

I'm wondering how can I access these unseen properties as they'd be essential for creating a cohesive editor replacement.