Not really answering your question, but there are a lot of different groups that tend to be XPing in CoM at any given time. You can always /ooc that you are looking for Shaman pages, most groups are happy to alert you when they've got one on a corpse.
I've done a lot of leveling in CoM, but 99.9% of it has been in a group. Pretty easy to find a group to join in CoM and the XP flows pretty easy if you've got a good group.
You may have trouble finding mobs to solo if most of the groups are active, especially during prime time. I definitely have seen people trying to solo, but as far as I know (at least the downstairs area of CoM) is mostly a group zone.
Sorry if this wasn't exactly what you were looking for, but I hope it helped even a little
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