Hi,
Excuse me for being a little direct. . . but it seems to me that you ask a lot of questions to which you have many answers. . . but of which you don’t bother (I think …) to understand them well, study them, analyze them … 
In this post: Selecting objects in the outliner?
… you had many explanations on how to change, modify the keyboard shortcuts.
That’s absolutely right 
. . . Everything happens in Blender Preferences
Here, you can add, modify your own shortcuts and associate them on a keyboard action, a mouse action or a stylus action of your Wacom …
As a reminder, you find all the documentation here: Keymap