RE: Notification to Team / Forms
Hi Tobias,
Have you checked my anwser in the thread below?
https://community.dynamics.com/365/marketing/f/dynamics-365-for-marketing-forum/371955/marketing-module-and-workflow
We could achieve your requirement with Workflow/Flow, and I would like add supplements for your scenario:
At beginning, you can render optionset field to multiple radio buttons in form field configuration.

Workflow:
Just add data you want with dynamic values assist, To field is required to be an existing user record in CRM.

Demo submission:

Email:

Flow:
Due to source form field stored data is guid reference for a marketing form record,
and option set field stored data is integer, these fields could be mapped with CRM workflow,
but we need customization in flow to show formatted value of them.

In step 2, I add a temp variable to store optionset formatted value, let name its "Preference Formatted"

In step 3, I use a Switch control to set Preference Formatted value based on Preference Contact method integer data.

In step 4, check if the new record is from marketing form:

In step 5, I retrieved form name with source form data, now both form name and option set get their formatted value.

Demo submission:

Email:

Please let me know your doubt and whether my anwser could be useful for you.
Regards,
Clofly