I'm still shopping around but I'm looking for a timeline. Essentially I want to be able to show the evolution of the concept of whiteness in different realms - social, legal, scientific, and political. So the top of the page talks about the two fish who end up asking "what's water", and how that question is parallel to the people who ask "what's whiteness?" The timeline would start under that in antiquity with the greeks who categorized people as citizens and non-citizens. As you scrolled down you would get more information on when the five races were defined and given hierarchy, or when laws were signed to change the definition of white from caucasian to light skinned european. By the end, the challenge to the reader is for them to understand their whiteness and its impact on their identity, and to discover what their identity is when divorced from whiteness. I think I can do all this in WP and there's a plugin I have my eye on, but it nickle and dimes you for features. Plus I'm a bit of an impulse buyer on projects like this, so I want to do the spreadsheet first and commit to the hard part of the project (the research and writing) before investing in the fun part.
Get Aeon Timeline. I use it extensively for all kinds of timelines. No, it isn't a blog or web site, but it will help you lay out your story, define the important relationships, and basically story-edit your idea down until you can get it into a presentable format. Presentation methods are a dime a dozen. Figuring out the essential story you want to tell, is the hard part, where the majority of the work needs to happen.