I'm really a fan of keyboard driven browsing (currently sticking with chromium + vimium) so I'll give a try to qutebrowser and would be cool if not only has adblocking but uMatrix and password manager extensions so that it can become more of a daily driver while staying snappy.
Password managers are supported via scripting integration. GNU pass, lastpass, keepass, and bitwarden are all supported, you just need to have the respective local CLI client installed.