Simple Link Directory Pro
Simple Link Directory Pro is a unique, advanced and simply the best WordPress Directory plugin for Listing Directory and Content Curation. Create innovative and elegant Link Directory, Link Lists, Link Collection, Link Page, Resource Page, Listing Directory, Topsite...
There is a Custom Field option for xenforo where we can Create custom field for User Registration.
which can show during user registration process and user can select particular option.
You can set Custom profile fields here.
Admin CP > Users > Custom Profile Fields