Can this be explained in English?

Cubase is superb.

Even after long time use, I am still not clear on the “shortcut language”. What I would like to know is…

Is there a sensible grouping for the different genres of short cut keys?

Genres of short cut keys, might be Ctrl+X, CtrlShift+X, Alt+X, Shift +X

For example, are the various “controller click +X” default assignments all do “this kind of thing”?