I don't think they've added more official ones. This is the closest one I could find: http://www.spore.com/view/myspore/norcalbytes
This is probably a Maxis Employee. They uploaded their only creation right after Spore's had that long maintenance. (BYerur, being their friend, which is a Maxis Admin here).
I believe conradtse is another Maxis employee and their latest creation is from 2017. You be the judge of this.