[quote=Raineh Daze]
There are three that are his specifically, yes. When it comes to owning Noble Phantasms, Gilgamesh trumps everyone. He owns all of them. Except Excalibur and Avalon (and probably Arondight since that's a sister-sword).
[/quote]

Gilgamesh has three noble phantasms. All of that shit that comes from the Gate of Babylon is part of his GoB, rather than being independent Noble Phantasms (Since it's through the magic of the gate that the noble phantasms are able to exist.)