I kept working on updating my relevance for Windows lifecycle dates, so that we can work on eliminating unsupported OSes in our environment, but then I realized it would also be very easy to compile all the information into a spreadsheet.
So here’s that spreadsheet on Google Docs!
Please feel free to comment/ask for changes/suggest corrections.
And here’s the published fixlet associated with it, to alert/locate users. I’ll be updating it soon with the additional content I’ve composed, and I may fork it into server and desktop branches. https://www.bigfix.me/fixlet/details/25287