First off, I’m using OS X El Capitan Version 10.11.6 and Safari Version 10.1.1. This website confirms that I “have a Unicode BASIC EGYPTIAN HIEROGLYPHS font installed” and that my version of Safari “correctly recognizes that font” (which I believe to be the Noto Sans Egyptian Hieroglyphs font by Monotype). However, when I try to view these Unicode characters in my Emoji & Symbols viewer, I cannot see any of them.
I believe (but I could be wrong) that I could download a font from Google Noto Fonts and use it throughout my interface and built-in apps. Nevertheless, is there a way that I could access whatever font software Safari is using and apply that elsewhere?