Interesting: GitLab reserves all GitHub handles in case you sign-in with your GH account. So I was at first miffed all my preferred names were taken, then delighted to find I snagged my GitHub handle in spite of it being "in use" merely by signing in with my GitHub ID.
And now I have a 100% empty repo for Macchiato [gitlab.com] that I can use to start lobbing TODO items at. GitLab's Board feature even works on mobile, unlike GitHub's late-to-the-party attempt at that feature, so I can jot things down from anywhere.
And now that a tiny bit of admin is done: Back to work. :)