Ok, so we had a whole bunch of internal emails about this The person you were working with on Twitter was kind enough to reach out to me to make sure we gave you the right information. Turns out that SE *is* now available with Creative Cloud for Teams. This was news to me!
Back to your original question: you should sign in with your Adobe ID. If your Adobe ID for CC for Teams is your corporate email address then that's the Adobe ID you should use.
Neil