Hello 
I’m trying to create a custom user field from a plugin but I’m not sure I fully understand what you’re describing here. In my plugin if I do:
register_editable_user_custom_field 'foo'
Should I still use plugin outlets connectors to display it on the user profile and the user card?
Or is there a mechanism like the custom field in the admin that can add it automatically (including in the users directory)? I want to avoid adding connector and serializer field if there is already a way to do this.
Thanks for your help!