Need to share some history? Check out this vertical timeline for inspiration.
Why I love it
Straight up and down is fresh. It'll also force you out of PowerPoint (unless you have a really short history-- which is fine). This format would look great in a report or online. In this example, I love that content can be divided into two logical pieces on either side of the timeline. The color coding was a bit too much for me but it could work with a skinny-d down list of categories.
How you might use it
To introduce yourself. I see this and immediately think of the quals section on a proposal. Shift gears to look at this from the perspective of your firm or your program and you might imagine project summaries down the left and corporate qualifications or skills going down the right. Looking at the two components side-by-side is compelling and pulls people in. During proposal evaluations, our clients are choked with page after page of table templates and, I'd imagine, would consider this a fresh air. You could set this up once to convey the firm's history and growth, then just do minor edits to ensure you hit the appropriate key words when including it in a proposal. For federal program managers, similarly you could have project phases running down the left and accomplishments on the right. This format helps put the entire program in context on a single sheet.