Vivaldi is probably the only Chromium based browser I would consider. It is my alternative when I am not using Firefox. Yeah it is pretty good.
I will say, like I mentioned about Firefox, if you scroll down in the comments you will find people saying Vivaldi will fade to obscurity without implementing some kind of AI.
Frankly I appreciate Vivaldi's stance: it isn't ready yet, too many issues and problems to add agents into our ecosystem.
By the way Vivaldi is like a swiss knife: you can take notes, email, calendar, tasks, so much stuff! On the other hand it often chokes on updates and the sync is less then perfect.