The team working on hieroglyphs and unicode is working hard, and Andrew Glass, who is a specialist of OpenTypes, has produced a very nice font which can handle the new Unicode operators.
You will find it in Andrew Glass's font tools project.
If you want the font, you can download it from this folder : https://github.com/microsoft/font-tools/tree/main/EgyptianOpenType/font
Note that the font is under the SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007, which makes it very open. I'm considering producing a JSesh-ready version of it.
Serge
Rosmorduc