In the hebrew scriptures, the Isealites identified the name of their Allah by the hebrew characters YHWH. This is known to the jewish people as the 'unspeakable name' because they came to believe that it is too holy to be pronounced. But the name is still written in their hebrew bible as Yahweh. In english it transliterates to Jehovah. (
Check the hebrew bible and look go to Exodus chapter 3)
In hebrew the word 'El/'Elohim' means God.... but
it is a title, not a personal name.
As you said, there are many allah's...so if you dont have a personal name for your allah, how do you distinguish him between all the many different allahs in the world. For example, Zeus, Molech, Satan, Vishnu, Brahman....all these allah's have personal names which identify them and their adherents identify their god/allah by these names. But if you only have god/allah as a name for your god, then im not sure it is truly a name.