Language settings

On the previous session to this, I added a couple of languages to my keyboard settings, but keeping my primary language English. When signing on this time, I found, after trying to sign on three times and then asking for a password reset (in spite of the fact I knew I was typing in the right password), that the keyboard setting has jumped to one of the secondary languages, and that was the reason why I couldn't sign in, so I reset the keyboard option at the top right of the screen. On signing in, I immediately went to my languages and regions settings and deleted the other choices. However on the input sources setting for the keyboard, one of my non primary languages had asserted itself in the list (see pic below). Can anyone at Apple please tell me the reasoning behind the Language and Region settings not taking first preference over the keyboard input source settings? They are after all in the very first line on the systems preferences panel. I would have thought it would be common sense to follow that hierarchy.