I am having a difficult time figuring out which e-mail address I log in with for the Azure portal and which Microsoft Account is connected to it and my MSDN Subscription benefits. When I log in, it seems like 3 different Azure Active Directory "domains" are connected to my MSDN Subscription, but I don't understand how they all got connected together.

I thought I had set up 2 different MSDN benefits and 2 separate Azure benefit subscriptions with 2 different e-mail logins, but that doesn't seem to be the case anymore. I don't know what happened and it is very difficult to try and figure it out.