I'm in XoO these days, not sure about any of the others. I occassionally still see Prodigy online, and last I heard he was still in AB. Mickey got swallowed by RL I think. Katsumoto was last on a few months ago, and I have a feeling he only has time to play during holidays so he might pop up again come June.
TBH with you if you're just playing to have fun a small friendly guild like the Godless is your best bet. It's very hard to get to know people in places like XoO or AB cause they're so big, so it gets a bit impersonal even though there's plenty of nice people in them. I'm only still there cause there's more pvp going on: small guilds NEED you to get pvp going, and, since I'm not on more than 1-2 times a week these days, I'd rather be in a big guild where I know there'll likely be somebody organising a group to do something at any odd hour I decide to log in!