I honestly wasn’t super familiar with WebView until you asked!

It looks like WebView is a stripped-down browser, more than anything else. It can leverage different rendering engines depending on the platform, and on Android it looks like it leverages Blink just like Chrome.

Technically, WebKit is Apple’s rendering engine (Safari).

Google uses Blink, which is a fork of WebKit, but is its own thing now.

So, you can still use Safari without directly contributing to Google’s de facto rendering engine monopoly.