Are there any events faster than DOMContentLoaded that can be set as the argument of addEventListener? what is that?

Question

Suppose that get a DOM as reference Node, then create and insert a DOM as new Node.

If I create and insert the new Node as soon as possible, is DOMContentLoaded the best event option in the above situation?

The reference Node is not image, it's HTMLnknowElement such as a HTMLDivElement, HTMLSpanElement.

Here is an example code flow.

window.addEventListener("DOMContentLoaded", (event) => {
 // Below is an example code as pseudo code.

 // Get a reference DOM.
 const referenceEl = document.querySelector(".foo .reference-dom");
 // Create a new DOM.
 const newEl = document.createElement(htmlTag);
 // Insert the new DOM before reference DOM.
 referenceEl.parentElement.insertBefore(newEl, referenceEl.nextElementSibling)
})

If I execute the code as soon as possible, is DOMContentLoaded the best event option in the above situation?