Hi there Wintertooth,
"Let me know if I'm not describing my idea good enough. "
Well that is certainly true for me, and as I am the only one to have
replied to your thread, it may also be true for other members.
This is what has me bemused...
"I want an image where you can mouse over different categories within the image... "
...and is why I requested an example image.
I have never heard of an image having categories.