I believe Windows Programs List is similar to the "All Programs list" you see on Whiskermenu (XFCE) and Stark Menu (Cinnamon). I believe Cinnamenu has it too, I'd have to go check.
It can be very helpful to have a full list in alphabetical order like that when you are not sure what Category the program falls under.
Unfortunately, I think before I start messing w/ the stock Zorin I need to really learn better how to operate it. Is there like a... getting started 101 anywhere? Some tutorial that's made specifically for former windows-addicts like me?
Ah... that is a Snap Package.
Normally, if you do not know the command or the direct path when adding a new item in Alacarte, you would select "Browse" then navigate Other Location > Computer > /usr/bin/ and search through that directory. However, snap packages are not placed in /usr/bin/...
Can you please look in /var/lib/snapd/desktop/applications/ and see if the Video-Downloader is present there?