Are there any up-to-date WebKit browsers for Android? The best I could find was Lightning, but it hasn't been updated in years.

Edit: I found A Lightning fork called Fulguris. It didn't work with the JPEG XL test image, but I really like the features and customizability. It's now my default browser on Android.

The closest thing I know of is Igalia has a project trying to port https://wpewebkit.org/ to Android https://github.com/Igalia/wpe-android and they have a minibrowser example apk in the releases of the current state (but I wouldn't call it a Chrome drop in replacement or anything at the moment - just the closest thing I know on Android).

WPE can be built for Android, but it’s not a user facing browser.