Multisite login redirect from homepage like edublogs (top right dropdown)

So by default you login with the url from the welcome email domain.com/username/wp-login.php

BUT what if you wanted a login on the homepage like edublog uses where users would be redirected to their site after logging in? One of the first things that comes up in a search is an old post with what "used to work" so I assume its possible?

https://wordpress.org/support/topic/automatic-redirection-to-child-site-from-main?replies=15

Also, I use a plugin (link here) I saw mentioned here that allows me to easily redirect my users to a specific page. However, just curious if I could also put a login link on the homepage for all users to access & login to their site?

thanks!!