What Markdown is
A Markdown table is rows of pipe-separated cells with a dashed rule under the header. Alignment is set by placing colons in that rule.
README files, GitHub issues, documentation sites, Obsidian and Notion.
What MediaWiki is
MediaWiki table markup opens with {| and a class, marks headers with an exclamation mark and rows with |-.
Wikipedia editors and anyone running a MediaWiki install.
What changes when you convert Markdown to MediaWiki
Leading and trailing pipes are optional and both are handled. A pipe the author escaped with a backslash is read as data rather than a column break, which is the usual reason a hand-written table parses one column too wide.
The wikitable class is applied, which is what gives the table borders and header shading on Wikipedia.
What carries over from Markdown to MediaWiki
MediaWiki can express everything Markdown holds about a table, so this conversion is about shape rather than loss.
Markdown and MediaWiki can express the same things about a table, so nothing is lost here - only rewritten. A pipe table is one row per line, so a line break inside a cell ends the row early. Tables open with {| and close with |}, and a cell can hold templates or another table.
That makes this a change of notation rather than of content: the same values, the same columns, the same order, written with the markers MediaWiki expects instead of the ones Markdown uses.
The identifier 007 comes out of the MediaWiki as 007. Reading it as a number would have made it 7, and an id that changes value is worse than one that stays text.
The role "Analyst, data" survives with its comma, in one cell rather than split across two. That is the first thing to check in any converted table, and the usual place a MediaWiki file goes wrong.
The quotes around Jonah "Jo" Pryce are left as a plain quote character in the MediaWiki.