Thanks, that was very helpful! I'm new to Arch based distros, but an evening of googling got me close to your suggestions. I did discover that the Add/Remove Software app is Pamac, and that did give a nice gui for the process. I also used pacman for an item or two. However, I didn't know how to make a list. Super helpful.
The biggest issue was: where do I find a list of everything in the Setup Assistant? So... I found the repo on Gitlab, dug through the files, and found the lists Setup Assistant draws from to give the options! Voilà!! Even better, that list had the exact name of the package, as many have multiple versions. I wish I had the info on a package list. Next time! Thanks for the links and info. Very worth reading.
P.S. I prefer doing these things in the terminal, honestly, as I always like to know what's going on "behind the scenes". Pacman it is from now on. Thanks again!