Alright, I've got a whole bunch!
We've got here...
Probably not very interesting to play, but it's constructed by taking a planet in the "open nodes" list and finding a spot it can add a planet within a certain range and so that all wormhole links stay above 30 degrees with respect to other wormhole links. This planet then attempts to connect to others within range following the same rules and is pushed to the "open node" list.
Any planet with > 4 outbound links is removed from the "open node" list (or it an attempt to expand fails too many times)
My first foray into design, based loosely off Space Empires 4(?) galaxy construction.
This one I was just kinda playing around. Not sure I'm happy with the tiny rings (mainly in how many of them there are, but I'm already 10% over budget on planets: you'll notice there are 88). Crossing wormhole links are intentional, although kept to a minimum.
This one is based off of the mechanics that produce spiral arm galaxies in the real world:
Works better with more planets.
Like Mini-clusters except that all of the clusters are circular "bubbles" linked in a ring. Rings are largely connected via MST, although very nearby bubbles will link up additionally (looks very foamy when they're clumped tightly).