The keyboard/language indicator in the taskbar is one of the oddities, in that you cannot choose for it not to be in the taskbar if you have installed multiple language packs. I just checked the Select which icons appear in the taskbar settings and its nowhere to be found. It showed up as soon as I had added additional language packs (in this case, variants of English).
Things have changed somewhat since I added these, but under 1909 it's under Settings, Time & Language, Language Pane, Add a preferred language button. There's also a new-to-me link for Choose an input method to always use as default.
Brian - Windows 10 Pro, 64-Bit, Version 1909, Build 18363
Tolerance is the positive and cordial effort to understand another's beliefs, practices, and habits without necessarily sharing or accepting them.
~ Joshua Liebman