Custom Inspector: How to Align EditorGUILayout.Objectfield in a Horizontal Group with other EditorGUILayout.Objectfield that aren't in Horizontal Groups?

I've made a Foldout and a Objectfield in a horizontal group but the Objectfield isn't aligning with the other Objectfields in my inspector that aren't in horizontal groups.

I would like for the 2 Objectfields which are inside their horizontal groups to align with the other Objectfields and also adjust their width with them when the inspector width is changed.

 EditorGUILayout.BeginHorizontal();
         showCurrentLevelFoldout = EditorGUILayout.Foldout(showCurrentLevelFoldout, "Current Level");
         progressScript.currentLevelBackgroundImage = (Image)EditorGUILayout.ObjectField(progressScript.currentLevelBackgroundImage, typeof(Image), true);
         EditorGUILayout.EndHorizontal();
 
         if (showCurrentLevelFoldout) {
             EditorGUI.indentLevel++;
             progressScript.currentLevelFill = (Image)EditorGUILayout.ObjectField("Current Level Fill", progressScript.currentLevelFill, typeof(Image), true);
             progressScript.currentLevelText = (Text)EditorGUILayout.ObjectField("Current Level Text", progressScript.currentLevelText, typeof(Text), true);
             EditorGUI.indentLevel--;
         }
 
         EditorGUILayout.BeginHorizontal();
         showNextLevelFoldout = EditorGUILayout.Foldout(showNextLevelFoldout, "Next Level");
         progressScript.nextLevelBackgroundImage = (Image)EditorGUILayout.ObjectField(progressScript.nextLevelBackgroundImage, typeof(Image), true);
         EditorGUILayout.EndHorizontal();
 
         if (showNextLevelFoldout)
         {
             EditorGUI.indentLevel++;
             progressScript.nextLevelFill = (Image)EditorGUILayout.ObjectField("Next Level Fill", progressScript.nextLevelFill, typeof(Image), true);
             progressScript.nextLevelText = (Text)EditorGUILayout.ObjectField("Next Level Text", progressScript.nextLevelText, typeof(Text), true);
             EditorGUI.indentLevel--;
         }

Here's what's happening:

Here's what I want to be happening: