Cognito Sync: This does appear deprecated, but frustratingly it doesn't provide dates such as when it might be inaccessible. I've added a new list to the page for services in this state.
Alexa for Business: Already on the archive page.
Elastic Graphics : Already on the archive page.
CloudEndure migration: Added
Proton: Not being actively developed doesn't meet my personal criteria for it being deprecated. I view something as deprecated when the service can no longer be used, or is otherwise degraded.
Honeycode: Already on the archive page.
Golang: Good call. I did add the deprecation of the Python 2.7 SDK, so I feel obligated to add this, although I don't want to add other non-service things.
Elastic inference: Already on the archive page.
Import/Export: Added to the archive page. Appears to have been erased in October 2016 based on archive.org's last capture before the link to https://aws.amazon.com/importexport 301'd.
Worklink: Added. Appears to have been erased between April and June of 2022.
Sumerian: Already on the archive page.
Lumberyard: Added, and gave it a date of July 2021.
Cognito Sync (https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-sync.html) pushes people to AppSync instead.
Alexa for Business used to be a full fledged AWS service (and showed up on the bill); it got whacked: https://web.archive.org/web/20221225182801/https://docs.aws.amazon.com/a4b/latest/ag/what-is.html
Their Elastic Graphics offering now silently redirects: https://aws.amazon.com/ec2/elastic-graphics/
CloudEndure Migration went EOL: https://docs.cloudendure.com/Content/Configuring_and_Running_Migration/Migration_EOL/Migration_EOL.htm
Proton isn't dead but may as well be: https://github.com/aws/aws-proton-public-roadmap
Honeycode rather famously and loudly got the axe.
The GoLang runtime got whacked: https://aws.amazon.com/blogs/compute/migrating-aws-lambda-functions-from-the-go1-x-runtime-to-the-custom-runtime-on-amazon-linux-2/
Elastic inference isn't available to new customers: https://aws.amazon.com/machine-learning/elastic-inference/
Pepperidge Farm remembers Import/Export jobs: https://aws.amazon.com/about-aws/whats-new/2009/05/20/AWS-Import-Export/
WorkLink got silently redirected: https://aws.amazon.com/about-aws/whats-new/2019/01/introducing-amazon-worklink/
"You forgot Sumerian." https://aws.amazon.com/blogs/aws/launch-presenting-amazon-sumerian/
Lumberyard may be most famous for its "zombie clause" in the ToS. https://aws.amazon.com/lumberyard/
RDS on VMware got violently redirected to RDS; they tried to memory hole it. But it went GA! https://aws.amazon.com/about-aws/whats-new/2019/10/amazon-rds-on-vmware-is-now-generally-available/
CodeStar was vanished: https://aws.amazon.com/blogs/aws/new-aws-codestar/