Best practice for collecting additional profile fields in New Universal Login without custom domains?

Hi everyone,

I’m currently working on the New Universal Login experience for my platform, AIELTS, and I’m looking for some architectural guidance.

I want to capture extra profile fields (like “Full Name” or “Company Name”) during the signup process. Previously, I was looking into adding these directly to the signup widget, but I’ve realized that the current New Universal Login dashboard doesn’t provide a simple “Add Field” button for database connections like the legacy classic widget did.

Kindly, let me know the ways of adding it without adding custom domains / creating personalized forms.