To be honest the best chromium based browser I've used (when I'm forced to use a chromium based browser) is the Samsung internet one. It has a dark mode that actually works and protects my vampire eyes lol.
Never used brave because I heard all of the scammy ad network and crypto stuff years ago, immediately put me off it. Now learning that the creator probably hates me, it's just another reason not to touch it.
I've tried it, looks cool, and using the flag "enable with selective inversion of non image elements" really helps eliminate all the issues with dark mode