In reply to Mark Wiseman.

So many plugins take your IP address. I,as a website owner, will know your IP address when you make a comment on a post (logged in or guest posting).
Most security plugins or any other plugin that blocks people based on IP address, will know the IP address.

Anti-spam Bee (plugin), has an option to allow comments on certain language, I wonder where the database is for anti-spam bee checks to see the language.

All WordPress sites will know your IP address when you make a comment. Obviously the owner/admin will know your IP address and e-mail address. I wonder if all this is GDPR compliant.