I am trying to edit order email template to fit my needs. However I am not able to edit the last part where the order items, quantity and price are. I want to have something like what you are seeing on the image below. As you I want Item name only on the left, followed by SKU number, 3rd column quantity and last column item/s price. I've tried to make direct edits to items.phtml but I am not able to understand how to have this result.
Order email template's item section coming from this file in default Magento
You can override this template file here in your custom theme
You can change content here based on your requirement.
Hope this will help you!