Isn't lemmy.one and beehaw still federating? Why did you make a second account on beehaw? Same for kbin, what do you mean you are not exploring it? All the content on kbin is accessible from lemmy.one.
If you have an account on one instance, you're already able to access all the content of all other instances. (That federate with yours) That includes kbin. Kbin's content is already in your "all" feed, and you're already exploring it.