Add ping button for scriptable object Inspector

ScriptableObjectHeaderPing.cs

// NOTE: this executes on all selected objects.. and compares if target is ScriptableObject
using UnityEditor;
using UnityEngine;

[InitializeOnLoad]
public static class ScriptableObjectHeaderPing
{
    static ScriptableObjectHeaderPing()
    {
        // Called after Unity draws the default header of *any* inspector
        Editor.finishedDefaultHeaderGUI += OnPostHeaderGUI;
    }

    private static void OnPostHeaderGUI(Editor editor)
    {
        // Only for ScriptableObjects
        if (!(editor.target is ScriptableObject))
            return;

        // Draw a little row right under the default header (type name + Open button)
        using (new EditorGUILayout.HorizontalScope())
        {
            GUILayout.FlexibleSpace(); // push to right side

            if (GUILayout.Button("Ping", EditorStyles.miniButton))
            {
                Object target = editor.target;
                if (target != null)
                {
                    Selection.activeObject = target;
                    EditorGUIUtility.PingObject(target);
                }
            }
        }
    }
}

ScriptableObjectNamePreview.cs

// NOTE: this is custom editor for ScriptableObjects ONLY (and add button in preview gui)

using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(ScriptableObject), true)]  // useForChildren = true
public class ScriptableObjectNamePreview : Editor
{
    // Tell Unity that this object has a preview GUI
    public override bool HasPreviewGUI()
    {
        return true;
    }

    // Optional: title text shown above the preview area
    public override GUIContent GetPreviewTitle()
    {
        return new GUIContent(target != null ? target.name : "ScriptableObject");
    }

    // Small toolbar above the preview (where built-in preview buttons usually go)
    public override void OnPreviewSettings()
    {
        base.OnPreviewSettings();

        if (GUILayout.Button("Ping", EditorStyles.miniButton))
        {
            if (target != null)
            {
                // Select and ping this object (in Project window or Hierarchy if applicable)
                Selection.activeObject = target;
                EditorGUIUtility.PingObject(target);
            }
        }
    }

    // Draw the preview area (bottom of the inspector)
    public override void OnPreviewGUI(Rect r, GUIStyle background)
    {
        if (target == null)
            return;

        // Draw default background
        if (Event.current.type == EventType.Repaint && background != null)
        {
            background.Draw(r, GUIContent.none, false, false, false, false);
        }

        // Center the name text in the preview rect
        var labelStyle = new GUIStyle(EditorStyles.boldLabel)
        {
            alignment = TextAnchor.MiddleCenter,
            wordWrap = true,
            fontSize = 14
        };

        GUI.Label(r, target.name, labelStyle);
    }
}

ScriptableObjectPingEditor.cs

// NOTE most lightweight?

// Assets/Editor/ScriptableObjectPingEditor.cs
using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(ScriptableObject), true)]  // useForChildren = true
public class ScriptableObjectPingEditor : Editor
{
    protected override void OnHeaderGUI()
    {
        // Default header (icon, name, Open button)
        base.OnHeaderGUI();

        // Extra row with Ping button
        using (new EditorGUILayout.HorizontalScope())
        {
            GUILayout.FlexibleSpace();

            if (GUILayout.Button("Ping", EditorStyles.miniButton))
            {
                if (target != null)
                {
                    Selection.activeObject = target;
                    EditorGUIUtility.PingObject(target);
                }
            }
        }
    }

    // Use default inspector; no preview overrides
    public override void OnInspectorGUI()
    {
        base.OnInspectorGUI();
    }
}