I mean truly independent of USA code base. Everything is still relying on upstream Chromium or Firefox with superficial tweaks and gimmicks. The maintainers of LibreWolf and Fennec which are what I'm using are more like game mod devs.

If ecosia+qwant actually forked from either and broke compatibility going their own path I'd consider them non USA. I know those two are working together on a search indexer and I'm very excited about that coming to fruition because that's more what I'm talking about and eager to support.

I realise what a mammoth challenge this is :( Probably needs EU funding like the search indexer.

Ecosia on Android is based on Chromium. Qwant on Android is based on: Firefox for Android, which uses the GeckoView engine.

Otherwise they are just search engines.

Those are search engines though, not web browsers.