Haven't seen this one mentioned here:
https://github.com/Floorp-Projects
https://github.com/Floorp-Projects/Floorp/releases
Floorp browser. Yet another Firefox fork that is being maintained in Japan. Not sure how private this is, but it's for certain in active development, with a user interface that is slightly more Chrome-ish. I think it's 64-bit only, but it's been a very smooth experience in any Puppy/Dog that can satisfy its requirements. F96-CE, Bookworm, Fatdog 9 tested, and no problems so far. Sound needs Pulseaudio, can be substituted with apulse.