Hello EnterpriseArchitect
Thanks for your question.
The recommendation is updating these accounts to use passkey (FIDO2) or configure certificate-based authentication for MFA. Both methods satisfy the MFA requirement.
This is dcoumented in the planning section here: https://learn.microsoft.com/en-us/entra/identity/authentication/concept-mandatory-multifactor-authentication
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola