Getting the name of one of a pharaohs correct does not make the rest of the story historical.
Maybe there was text back then and they knew this one fact. But at this time, we dont know it was just dead luck due to a common name. I dont know. I think its plausible it is the same character.
BUT
As written, it, the exodus, factually did not happen, and Israelites factually did evolve from displaces Canaanites.
Your books go against this fact, making another of many historical errors.
You embrace lack of evidence for moses and the evolution of Israelis but shrug off the story of Haman with some maybe. Brother, that's mishandling.
Also you repeating what someone else has said like a parrot. I dont mean to demean you, but just sit back and think a bit, you are quoting Moses because I brought him up. Have you read the full story in the bible and Quran both to know that it was plagiarised? I doubt it.
I am aching to point his story but I dont see a point.
Anyway your assessment was wrong regarding Haman, his name was never known since it has not been found anywhere but Egypt and certainly not in the bible. I wonder why Muhammed included his name in the Quran while copying Moses' story from it!
The name is mentioned in the bible, last chapter in a latter book, Ester which is another person, nothing to do with the Pharaoh.
28:6 And to enable them in the land, and to show Pharaoh and Haman and their troops what they had feared.
28:38 And Pharaoh said: O commanders, I have not known of any god for you other than me. Therefore, O Haman, fire-up the bricks and make for me a high platform, so perhaps I may take a look at the god of Moses; though I think he is one of the liars.
Hamans name is mentioned six times in the Quran, he is the builder and right hand for Moses.
This fact was never known until Egyptian hieroglyphic script was deciphered in the 18th century. My memory fails me but I think it was in 1797 but dont murder me if I got the year wrong. But the fact is, until then these egyptian scripts were never read as no one knew how to. Also, Muhammed lived in Saudi Arabia, so he could have never come across this name.
Why would he add this name to the story? If he plagiarised from the bible? To be frank Moses is mentioned in the Quran more than anyone else.
The Quran also has so many other things, but I understand that you must focus on the biblical characters that are also mentioned in the Quran since thats the way to prove lagiarism.
Peace