You might be able to use a “normal” (TOTP-compliant / Google Authenticator-like) 2FA app even with Microsoft work accounts.
One of the prompts to download MS Authenticator has a “use a different app” option:
I assume admins can disable it, but it’s also easy to miss.
On top of this, this prompt only shows up when attempting to add a new MS Authenticator, since there is no “other app” option among the authenticator type choices.
You might be able to use a “normal” (TOTP-compliant / Google Authenticator-like) 2FA app even with Microsoft work accounts. One of the prompts to download MS Authenticator has a “use a different app” option:
I assume admins can disable it, but it’s also easy to miss. On top of this, this prompt only shows up when attempting to add a new MS Authenticator, since there is no “other app” option among the authenticator type choices.