I've made something that I think you would like for one of your collections. I've made my own Evolution of Zilla (1998-2017), which you can find in my gallery. I'm not sure it's perfect, but I made it the best I could, showing all existing versions of the creature on it. Feel free to take a look at it and if you want, you can put it on your favourites.
This message is for Megalania-Prisca.