Floorp Is a pretty decent Firefox fork. And unGoogled Chromium is just the base level browser of Chromium with most of the Google shit ripped out. But it's kind of dumb if you want to use any plugins, you either have to painstakingly install it manually or manually reinstall the Chrome Play Store crap.
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I liked Vivaldi for a while, which is another Chrome fork, mainly based on the way that it stacks tabs, but it's kind of a monolith of a browser that tries to do everything from email to RSS to notes and other crap, which is not necessarily needed in a browser for me personally.