Yeah, I got something similar, but this is no good. The variations are too subtle. To me: one person can be an animal, another can be a simple square (but that is the only square in the set), another can be a single letter. Big themes like professions, nationality, memorable colors, actions
The Brazilian black rabbit astronaut riding a blue bike would be an awesome image.
It might be better to turn the key into words first and then ask the AI to generate layers for those words.