Note: You can combine some of the shortcuts. For example, Ctrl+Shift+Click on a unit will add that unit and others of the same type on the screen to the current selection.

Note: StarCraft: Remastered only switches between those two modes whereas non-remastered supports three modes

Control group selection shortcuts also work for one of the players (such as Alt+number, double tapping on number to select units from the numbered control group and then center screen on them)