Chrome is the dominant browser, so either Chrome or something Chrome-based, like Brave. But then Mobile Safari is a large percentage, so Safari, as well. And

Chrome is the dominant browser, so either Chrome or something Chrome-based, like Brave. But then Mobile Safari is a large percentage, so Safari, as well. And as a good netizen, you'll also want to make sure Firefox works OK. TL;DR: Test in all of the above.