Listings: Order By New Listings and Newly Updated Listings

Hi-
Using version 8.9.6.
I had figured this out a few years ago when originally setting up my homepage (and it worked perfectly), but recently updated it and lost the original code to display listings by Newly Listed AND Updated Listings.
For example, listings are displayed in order that they are added to the site, but if you go in and edit your listing, it’s listed back at the beginning (refreshed listing).

From the Sample Query String: Latest products :: orderby=ID&order=desc
How would I add a date update/edited (or whatever it’s called)?
Thanks!