https://github.com/magesuite/magesuite-success-page-registration
This module adds a registration form on the checkout success page for guest users. The form is already populated with data provided by the user in checkout.
Installation
This module is optional
composer require "creativestyle/magesuite-success-page-registration" ^2.0.0
Admin settings
Stores -> Configuration -> MageSuite -> Success page -> Registration form
Frontend
The registration form is the same form as displayed on the registration page. Fields that are already filled (f.e. name) are hidden by CSS.
Magento ReCaptcha block is added to the form