

On Android, the only ones I would use is Fennec (F-Droid build of Firefox), or IronFox (privacy focused fork of Firefox), almost purely because they are the only ones that can use extensions (none of the Chromium ones can do that I think!)
Brave is awful, has weird crypto NFT shenanigans going on, I would not recommended. Vivaldi is closed-source and, honestly, isn’t very special (especially the Android version). The best Chromium offering is probably Cromite, which is a privacy-focused one that has an ad-blocker, but still, no extensions which kind of sucks.
I am moving to Piefed at scallisto@retrofed.com (https://retrofed.com/u/scallisto)


For OpenCentauri, there isn’t any store where you can get CCs with it preinstalled. Installation looks pretty straightforward though as long as you can follow the docs (which are really nice actually!)
Just of note, OpenCentauri is still being developed so it’s not the most stable (and the docs mention that Klipper plugins are pretty much a no-go)