Kujata is on JP data center if I'm not mistaken. Most EN players afaik are mostly in Tonberry, Tiamat or Masamune. They will not usually speak in say channels. Although you might see some shouts with auto translate. Most people prefer talking in fc and ls.

If location and timezone isn't an issue, there's also the NA/EU worlds. Last I remember, I encountered oceania players in Behemoth.