Where can I find * all * screen saver files on Sierra MacOS?

When I go to "Desktop & Screen Saver", I see about 20 different screensavers. All of the online resources I have found have directed me to one of these sites, none of them containing ALL screensavers. In particular, I just want to edit / search the .saver file for the Floating screen saver.

I only find abstract art screensavers such as Flurry, Arabesque, Shell, Word of the Day, Random. I can use other screensavers, like Floating, Flip-up, Reflections, Origami, …

Where are all the other screensavers?

I have looked in these folders:

/ Library / Screensavers
(only contains a folder with a bunch of photos)
~ / Library / Screensavers
/ System / Library / Screensavers
(contains only the abstract screensavers mentioned above)
(contains a bunch of irrelevant files)