Arc is still great on macOS (not so much the Windows build, essentially an abandoned beta) even if it's not getting active development anymore.
I'm defaulting to Firefox ever since I moved my desktop to CachyOS, but I need to either reacquaint myself with its add-on situation after a long arc of using "chrome alternatives", or migrate to something else niche. Vivaldi was what I was sold on before Arc caught my attention through its wonderful UX/UI.