There are indeed, which is great. I wasn't sure if such a vague 'official' group would turn out to be so popular! I just wanted to make sure no one thought that only creations for the group with the most votes should be posted.
While I don't want to dismiss any posts, I'm also a little worried that the Horde might overwhelm the obscure Eternians at this point. I started the tours as a way to showcase all the obscure guys that we just didn't get to see enough of in the series and comics and classic sources, and I think that extends very naturally to fan creations since they so often spring from those same obscure corners of He-Man's world. I love the Horde, but I want to explore some other parts of the planet first. A character who fits into any of these groups but is also a Horde member is fine, but I may save him/her for the eventual Horde tour.
Etherians are welcome as well, though I'm still unsure of what all the potential Etherian groups are at this point. I'd love to include people like Hiproar and Unicra in Etheria, but I'm not sure they have an official group to which they belong--and I'm not yet prepared to make tours that are completely fan-created. But then, I'm also still not sure where people like Bow would turn up on Etheria.