Because it isn’t listed yet means he didn’t sign it?
A guberment worker will get around to recording it in due time, you can’t rush them.
You do know that the White House trumpets all his significant actions?
This one was especially significant, historic.
In any case the actual EO would have a number and date. No action can proceed absent the authority signed, dated, and numbered document.
Check the National Archives site and The Congressional Register, it would also be in one of those.
You didn’t go to whitehouse.gov did you? Snort