Automatically Open Playlist Menu

Question

Would have expected this to be an easy task. It's already been asked here without an answer.

I have a basic iframe embedded YouTube Playlist:

<iframe 
width="438" 
height="250"         
src="https://www.youtube.com/embed?listType=playlist&list=PL98379246AE853853&index&index=0"
frameborder="0" 
allow="accelerometer; autoplay; encrypted-media; 
gyroscope; picture-in-picture"allowfullscreen="1" 
id="iframe_yt" ></iframe>

I want the playlist menu to be open, or to open as soon as the frame is loaded:

This could be built from scratch using the API along these lines.

I am wondering if there is another way, perhaps by using javascript to click() the menu once the frame has loaded.

Possible checking for availability of the

_yt_player element something like this:

window.addEventListener('load', function () {
    console.log(_yt_player);
}); 

My initially chicken scratches are here.

Thanks for your input.