In studying the Koran what strikes you as extremely odd is that Mohammads god allah is mainly referred to in a third person manner
Ahem........
I don't see any first person manner in the bible dude! Rather, there are direct words of the prophets and unknown authors.
But there is a lot of 'first person speech' in the Quran that I don't need to quote! Just start reading you will get.
So why does Allah sometimes speaks in third person manner? I don't know well, but I have an opinion.
Which sounds heavier and exalts Him more? Read.
"And then I said........."
"And then your LORD said......"
The second one. This is my assumption. I would request bro Osama or someone to leave their opinion

Tahmeed