Oh huh, TIL. I had always assumed they were all webkit just due to the amount of compatibility code I’ve had to implement in CSS with -webkit styles. It makes sense that a fork like Blink would be backwards compatible with those though

Chromium and its forks actually all use WebKit as well: https://www.chromium.org/developers/design-documents/displaying-a-web-page-in-chrome/

WebKit: Rendering engine shared between Safari, Chromium, and all other WebKit-based browsers.