That one uses a transparent plasma theme, should not be hard to add one to your install.
systemsettings > workspace theme > desktop theme > Get New Theme
Desktop clock/info most probably is Conky (with a custom conky.conf).
It uses 2 panels, top seems a standard/default panel, bottom uses an empty panel with just icons-only widget added. Or you can try and see if
latte-dock gives you the look you want for the bottom panel.
So not hard to get a fairly similar setup.