Usergroup Legend - with a difference

[Powlo]

Ok, ive looked at loads of usergroup legends that are all pretty much the same, its just one line of groups in varrying colours with all online member underneath (or above).
This is great as im using one of them right now, but then i saw a site that has it laid out rather differently.
Splitting the groups up with their corresponding members under each group.



Ive looked allover for this modification but cant find it so im starting to think the guy has customised it himself but i thought i would check here before i give up.

Thanks.