Google’s John Mueller confirmed on Twitter that it’s okay to hide registration information on WHOIS. A webmaster asked if the WHOIS information should be public to gain trust from Google bots. John Mueller answered that this wasn’t necessary:
No, feel free to use the privacy settings as you want them.— 🍌 John 🍌 (@JohnMu) April 3, 2019
With GDPR, public WHOIS entries as they have been before aren’t legal anymore in Europe and you won’t get WHOIS information for European websites without ‘legitimate and proportionate interest’ in the non-public data.
There are many things that will improve your rankings
There are many things that will improve your rankings on Google and other search engines. WHOIS is not Part of the Equation. The Top 10 Optimizer tool and the website audit tool in SEOprofiler help you to optimize your pages for high rankings. The Link Profiler tool and the link building tools help you to improve the links that point to your website: