The many "standards" of Markdown also now include CommonMark [1]. There is also some interesting history as to why it is not named "Standard Markdown".
[1] http://commonmark.org/ [2] https://blog.codinghorror.com/standard-markdown-is-now-commo...
[1] http://commonmark.org/ [2] https://blog.codinghorror.com/standard-markdown-is-now-commo...
That said, I did not notice the "GitLab Flavored Markdown" in the story link but I'll be fairly disappointed if it is actually "yet another Markdown pseudo-standard" and not CommonMark.