Pre-Islamic Bismillah
The Quran tells us that the Arabs were following a distorted form of Islam inherited from Hazrat Ismael. Additionally, the religion revealed by Allah has always been Islam, so it’s natural for similarities to exist. I don’t see any issue with this. Since the name refers to a monotheistic deity, it seems reasonable to accept the above statement. You will find this link more helpful for your query where Al Jallad has analayzed this discovery https://almuslih.org/wp-content/uploads/Library/Jallad%2C%20A%20-%20The%20pre-Islamic%20Basmala.pdf I will suggest you to watch this videos for interesting information. https://www.youtube.com/watch?v=cjNODB0_9I4 https://islamresearchgroup.com/wp-content/uploads/2020/06/who-wrote-the-quran-6.-inscriptions.pdf