I work at a company that has a lot of user flows.

For example: depending on how you arrive to the registration page, you're presented with a different UI/page.

What's the best way to manage and collect all of these flows in one place? I ask because I want my team to start being more cognizant about the changes they make to various parts of the product as there are downstream impacts that are often overlooked. Being able to see how one page flow to another, a map if you will, should help with that.