There's a fic in AO3 called Children of Horus by Midoriberry and the author doesn't just add Egypt mythology but Canaan and Mesopotamian mythology aswell and Orpheus version of Greek. You can tell the author is really passionate about mythology. It freature in they're other Ennead fics aswell.
And if you guys want more of r19 bonuses chapter read the other author AO3 called Mother of Gods but they have their own take on it
Forgot to mention both fic have Mpreg
Here link for the Children Of Horus
https://archiveofourown.org/series/2217345
And the Mother Of God
https://archiveofourown.org/works/32296906/chapters/80055442
I know I can edit it but the last I did it. It deleted my post so sorry
Bookmarking this
Here the link for Children of Horus
https://archiveofourown.org/series/2217345
Mother of Gods
https://archiveofourown.org/works/32296906/chapters/80055442
Well can't delete this post. Oopsie
YOU. ARE. THE. GREATEST. BEING. EVER. ε=ε=(ノ≧∇≦)ノ <3<3<3<3<3
There manga here that center around Seth and Osiris don't it's not like the Osiris here and it not BL more like interpretation of it and the author is fun of Ennead as well
Here the link
https://www.mangago.zone/read-manga/the_god_of_calamity_wishes_for_naught/
And the author other mythology manga but this one isn't translated
https://www.mangaupdates.com/series/67mns8a/ochibure-zeus-to-dourei-no-ko