Does it create a WP user? Can I manage which social media accounts are able to login?

Hello,

I'd like to ask several questions about "Comments Plus" plugin:

1. When a user is logged in with social media account, does it mean that a WP user will be created or not? I'd like to prevent users from registering and signing in into a website. I want only allow them to leave comments via logging in with social media account within the comment form. Is this possible to do with this plugin?

2. Is it possible to disable WordPress social login option?

3. Is it possible to add other social media options to login with, for example Linkedin, Pinterest and so on.

4. Where can I find the list of extensions for this plugin?

Many thanks,
Dasha