Epiphany uses WebKit, but it doesn't have working add-on support yet, so you will still have lots of ads and cookie banners.

I use it as a secondary browser if something doesn't work in Librewolf, but for me the internet is pretty much unusable without "i (still) don't care about cookies" and UBlock Origin, so it only works as a backup for me.

There are also some Browsers using QTWebengine which uses Blink (the core of Chromium (meaning technically not chromium itself)) like Qutebrowser and Falkon.

Pale Moon and Basilisk which are based on an old version of Firefox and diverged quite a bit.

Konqueror which uses KHTML (predecessor of WebKit (predecessor of Blink)).

NetSurf idk haven't tried it.

Then there is stuff like Ladybird, which will crash all the time. Links, ELinks, Lynx, w3m, Links2 are text based. Discontinued Internet Explorer. Old versions of MS Egde. Old versions of Opera. Basically nothing else that is usable.