I would like to prepare vector graphics of this type.
They are certainly prepared in 1) some 3d program and 2) edited probably in After Effects and 3) exported to SVG, AI or EPS.
I found the PLEXUS plugin, it is nice to export shapes, particles and networks to an SVG file, but there is one problem. With this plug-in, depth-of-field simulations cannot be obtained in the SVG file. Plexus only exports individual points and lines.