You are a champ, that looks amazing. Thank you.
For future noobs like me, unzip the file to ~/.config/GIMP/2.10/scripts, or wherever your scripts folder is (Edit > Preferences > Folders > Scripts).
For future noobs like me, unzip the file to ~/.config/GIMP/2.10/scripts, or wherever your scripts folder is (Edit > Preferences > Folders > Scripts).