After 3 minutes of searching on Google, it becomes clear that it is a VERY common name in the black communities WORLWIDE.
You must be registered to see the links
There you can see that the numbers have gone down recently, but, when "this" Jamaal was born it was a VERY common name in the USA.
So, considering that Jamaal, is black, was born in a time where that name was extremely common, it is actually very believable.
_____________________________________________________
Now let's go about: "almost every VN", I've played over a 1,000 of them. I've encountered maybe 10 Jamaals, in total. Either you are choosing them specifically, have a smaller sample, or you are just using hyperbole to create Drama about a VERY common name for that community and age.
Whatever it is:
View attachment 4228093