The Watchers

Planetary Ring Systems

Murder off-screen

Spaghetti Grounds

No combination of features will get you only this group, but setting PoV: Distant and Trails: Confused particles will get you close. Distant makes the cores smaller, and confused particles mean that there are no trials, leading to a very clean look.

In the Spotlight

Impressionism

Tumbling Cores

Setting Symmetry: Chaos and Inner Connections: Visible will give Breeding Grounds that look like cores tumbling off the canvas. Symmetry: Chaos means that the cores aren't tied to the subdivided grid, which gives the tumbling effect. Inner Connections: visible gives the cores a more filled-out look, which makes them resemble balls.

Concluding Remarks

I need to reference Breeding Grounds somewhere in the text for it to show up, so here you are ⬇️