Mega-Menu with Post images

Hi and a happy new year Support Team!

i try to replace the Theme of my hiking blog with GP.
I'm aware that i can't build the exact same design and that's fine, but one thing is a bit of essential for me.

For your reference here are the old page and the new GP based:

Old: https://www.dirtypath.com/
New: https://roperebelz.com/

The one thing i love about the old Theme is the Mega Menu with Images in the main Menu.
I found the simple Mega Menu example in your Docs but that is far away from the Old one.

Is there a way to implement post images in the Mega-Menu Example to make it beahve similar to the old page?

Thanks in advance and have a good day!
Rolf