what is the key difference between “Coding with CLI” and "Designing with Ionic Creator "
You create stuff via the command line and then continue working on it in a code editor.
You also can use Ionic 2+ and Angular.
You create stuff in a WYSIWYG interface, also write some code there, maybe later you change to a normal code editor to finish your stuff.
You can only use Ionic v1 with AngularJS.