I use categories to order my posts into timelines. So for example, Jennifer Lopez
There are no subcategories. All categories are on one level.
The top post, "Wants Gomez" actually has two categories: Jennifer Lopez and Selina Gomez. I'd like to display only the categories that are not in the current category, so in this case I'd like to see "Selina Gomez" displayed after the date.
Some posts may have three or more categories. For example, if a post had "George Bush, Dick Cheney, Barack Obama" as categories, when I look at the Barack Obama category I would see only George Bush, Dick Cheney displayed on the post, but if I looked at the George Bush category I would see Obama and Cheney.
I need the category name to link to the category page i.e. "Barack Obama" text will link to the Barack Obama category page.