Which apps are placing icons on statusbar?
Notification History displays a list of all notifications originating from apps and you can compare the app​ icon to that in your status bar to track down the app. You can even see the time stamp of each notification app to help you. As you can see from the pic , it shows notifications from System UI also ; that may help you identify the culprit for your battery charging icons



Once you track the app, you can try revoke it's permissions to show up in status bar. If these icons don't show up in safe mode, it is app based and of they do perhaps you are better off searching for a solution in your device / ROM forums