I just want to share my silliness, because I am sure I can’t be the only one who did not realize this sooner.
Apparently, you can CHANGE the team banner of each team as well. I thought we were only limited to one team per banner before, but the reality is you can change your team banner in the Bonuses Tab of the Troop page.
The whole day I was scrolling down to my default mist of scale team slot and complaining about not able to set more than one team to a banner when it turns out … You Can!
The team slots are only there as Empty Slot holders. Do not be fooled by the default kingdom banner display. You are free to set it to whatever Banner you wish!