Using older versions of Outlook for Mac in business environments
I was also able to get around this by choosing the "Not IMAP?" link in the top right (even though it is definitely IMAP).
From there I was able to bypass using the Microsoft Cloud option and just enter my IMAP server connection settings as I was before, and after that was done I was able to change my name to my actual name instead of just my email address or the label that Outlook had chosen for me to use. I appreciate your guidance as that put me in the right direction.