Editor script to create a whole bunch of scriptable objects from a list of comma-separated names or selected game objects in the scene.

ScriptableObjectMassCreator.cs

using UnityEditor;
using UnityEngine;

public class ScriptableObjectMassCreator : EditorWindow
{
    public string str;
    public bool FromText;
    public bool SplitComma;

    [MenuItem("Window/Scriptable Object Mass Creator")]
    static void Init()
    {
        ScriptableObjectMassCreator window = (ScriptableObjectMassCreator)GetWindow(typeof(ScriptableObjectMassCreator));
        window.minSize = new Vector2(405.0f, 550.0f);
        window.Show();
    }

    void OnGUI()
    {
        FromText = EditorGUILayout.Toggle("From text", FromText);
        if (FromText)
        {
            str = GUILayout.TextArea(str, GUILayout.ExpandWidth(true), GUILayout.Height(500.0f));
        }
        else
        {
            if(Selection.transforms.Length > 0)
            {
                str = "";
                for (int i = 0; i < Selection.transforms.Length; i++)
                {
                    str = str + Selection.transforms[i].gameObject.name + "\n";
                }
                str = GUILayout.TextArea(str, GUILayout.ExpandWidth(true), GUILayout.Height(500.0f));
            }
        }
        
        if (GUI.Button(new Rect(5, 510, 400, 40), "Create"))
        {
            MassCreate();
        }
    }

    void MassCreate()
    {
        string[] names;
        if (SplitComma)
        {
            names = str.Split(',');
        }
        else
        {
            names = str.Split('\n');
        }
            
        for (int i = 0; i < names.Length; i++)
        {
            if (names[i] == "") return;
            names[i] = names[i].Trim();
            var obj = CreateInstance(typeof(/* your so type here */));
            AssetDatabase.CreateAsset(obj, "Assets/" + names[i] + ".asset");
        }
        AssetDatabase.Refresh();
    }
}