Here is my character sheet:
(I hope I did it right)
View attachment 83011
The "Egypt" of Kulan is in
The Southwest subregion of Kanpur and is called Khemit (so, Khemitian). That is
very far away from Harqual. However, during The Transformation (10 years ago), other peoples were brought to Harqual from other parts of the world (and beyond). So, your PC's origins might/can be tied to Khemit, but there wouldn't be a large number of Khemitians on Harqual. A few dozen families at most and they would have arrived in lands south of Cauldron City.
So, Kane would have been born in Khemit, and he and family were brought to the Lands of Harqual when he was around eight years old. The nearby Mor's End accepted many of the newcomers to the continent. (Cauldron was less accepting at that time.) When Mor's End fell to the Infernals of Flamerule, many from the city were forced to flee. At that point, Cauldron's leadship had changed for the better, so many from Mor's End were allowed to relocate to the Dominion of Cauldron around 752 N.C.
Kane would have lived in Mor's End for 3 years before his family had to relocate to Cauldron City. Bast's Temple of the Cat helped many of Kane's people, but
he chose Jalivier instead. (Or maybe Jalivier chose him.) So, as he's grown up, he's witnessed a lot of turmoil.
Now, as for languages, he was born in Khemit so his native language would be Khemitian, which is basically Egyptian. Note that the Egyptian gods are known as the Khemitian Pantheon on Kulan. However, Bast is not tied to that pantheon on Harqual. She is a member of the Pantheon of the North. Khemitian isn't a standard language on Harqual, so Kane's parents would have made sure he was taught the common language of Harqual, which is actually called Common. (This 'Common' is the only language with that name on all of Kulan.) In truth, Common is only the common language in the lands north of The Great Expanse. The common language of the Far South is called Suar.
The regional language of the Thunder Lands is called Anorian. It originated in Mor's End. Kane was likely taught it too.
I also recommend Dwarven. There are a lot of dwarves in the Kul Moren Mountains. Gnomes in this area are rare. Halflings are pretty common in Cauldron. Elves less so since the earthquakes, and partial volcanic eruption, that destroyed sections of the city.