I’m aware of at least two honest-to-goodness new browser projects:
There’s Servo, which used to be from Mozilla, but then they abandoned it. Now I believe it’s independent after a long period of dormancy.
There is also Ladybird, whose founder is a prolific and technically brilliant person but who is also, at minimum, a fascist sympathizer, in addition to being a supporter of white replacement theory and other racist ideas.
Neither project, last I checked, is really close to being a “daily driver.” But they’re both in active development, so maybe in the future they’ll become legit alternatives to the Google/Apple duopoly.