This is what I need to learn next to forward my flask learning. I've put off User Authentication and Application Blueprints for too long!
https://hackersandslackers.com/flask-login-user-authentication/
https://hackersandslackers.com/flask-application-factory/
https://flask.palletsprojects.com/en/1.1.x/blueprints/
{% for ESSID in pageData['lteConnections']['ESSID'].values() | sort(attribute="ESSID") | sort(attribute="down", reverse=True) %}