Closure names can be confusing. What I call a Magnetic Snap is usually at least in older catalogs called a "magnetic snap closure" by Coach. That's the style we're most familiar with and that Coach is still using, there were two or three different sizes available, each by different manufacturers IIRC. There was also the Springlock, like the one on your Roll Bag, and a Touchlock style used on the 1992 Camden Classics and a few other lines.
If you look through the Coach Reference subforum, Vintage Coach Catalogs thread for the 1992 Fall Special Edition catalog, you'll find examples of the two older and now discontinued closure designs, Springlock and Touchlock. "Snaplock" is harder to pin down and might just be a catch-all term for the small snaps usually found on wallets and other small items, I can't find any official use by Coach of that term after searching the forums and my own files. We may have been using it interchangeably for "Springlock" so I should probably stop using it.
Springlocks and Touchlocks were only used for a short time because the small spring mechanism inside both styles could break or come loose and replacements got harder and harder to find. The solid Magnetic Snap Closures were pretty much foolproof as long as one piece was "male" and the other "female".
Here's an example of the Touchlock:
View attachment 5417305
Hope that helps clear up any confusion.
Thank you so much for all of this valuable information! And now I am wondering about the clasps on my Kristen bags!