It wasn't Mohammed who founded Islam.

[Minimalist]

Of course "Muhammad" has a meaning ("the praised one"), but it is also a proper name just like you might have a name with a meaning behind it.

Then what you need is to establish evidence that such a name was in use prior to islam. I know of no such evidence.

Because if it wasn't a name then Mo's parents look a bit presumptuous in naming him that, don't they? Maybe some angel visited them, too. Xtians pull that trick and islam borrowed everything else.

In this one the xtians have it all over you because there are any number of examples of 'jesus' ( Y'shua) being used as a name.

Let me give you one other thing to think on. "Moses" is now a common jewish name. Before the OT story was written how many people do you suppose were named "moses?"