"I'm not really sure how to explain this properly... so here goes. Is there any software that I can input a list of data (spreadsheet-ish) and have it organized by a top category bar. Hopefully this mock up will explain it better:"
Try these:
1. iData -- a "lightweight" database app loosely based on the old "QuickDex". Easy to set up and use. It -cannot- do calculations. All it can do is create a database list you can view, enter data into, etc. Has both "list" and "form" style views. Handles small databases VERY quickly. Handles larger db's pretty well, too (the largest I've tried has 1232 records, and it's as fast as smaller db's).
Doesn't seem to have been updated recently (2009), but still working fine with Snow Leopard, I believe it works with both Lion -and- Mountain Lion.
A small, smooth, speedy and clean app.
2. Tables -- this is also a "lightweight" spreadsheet app, worth trying.
If you don't need "calculations", I'd suggest trying iData first.