You are right to say that the site is using some Google services such as Google Fonts and Google Analytics

If you are using Mac, install Dash for macOS – API Documentation Browser, Snippet Manager – Kapeli.

If you are using Windows or Linux, install Zeal – Offline Documentation Browser.

Both programs are offline documentation programs and they are updated often.

Your mileage may vary.

Question: How can I get access to WordPress offical site without VPN?