There's a new campaign although the OP stated it is Private
https://bitcointalk.org/index.php?topic=3338629.0not sure if this needs to be added to the table or not, since technically it is still a signature campaign.
This is a very interesting thread, worth bookmarking. However, the options listed are not so interesting. And MatrixCoin is listed as available but it is already not accepting new members.
Why don't you create your own 'interesting' signature campaign, maybe that will make you happy
