Hi @andyyyyc
Welcome to the Auth0 Community!
Thank you for posting your question, and apologize for the late reply. Showing both SMS and email OTP or switching between them inside of the UL is tricky, as it’s not currently supported out of the box in Auth0, and requires additional steps to achieve this flow.
I would suggest checking this discussion about similar topic → Switch between password and passwordless login - #3 by nik.baleca
Thanks!
Dawid