"Timeline format" refers to a way of organizing information by depicting events or activities in chronological order, using a line or bar with specific points labeled along it to indicate when these events occurred. Full definition
This presents your background in an easily digestible timeline format. (livecareer.com)
This format presents your background in an easily digestible timeline format, and renders your work experience in such a way that it is easy to understand your career trajectory. (livecareer.com)
The format of actual posts has changed much like the format of the personal pages: they are now split into two columns in a timeline format. (epolitics.com)