User blog comment:StormWarriors2/The Widow Systems/@comment-3053446-20150206185451/@comment-3053446-20150206191219

Cythor Fiends (http://warhammer40k.wikia.com/wiki/Ghoul_Stars)

Borlac (http://wh40k.lexicanum.com/wiki/Borlac)

Ghoul star Exodite Worlds http://wh40k.lexicanum.com/mediawiki/images/thumb/0/00/Eldar_planets.jpg/723px-Eldar_planets.jpg

Loxatl (http://wh40k.lexicanum.com/wiki/Loxatl) (says they are all over the freaking place)

Nicassar (Explorers, possibly (http://wh40k.lexicanum.com/wiki/Nicassar))

There are some human planets but many of them are dead worlds. Which fits in with the Wanderer's Lore as their planet was destroyed immedately following the Pale Wastings incident and they left the ghoul stars. (Though it was a border world not actually in the ghoul stars, along with the drancorian System which was not located in the ghoul stars, but in the halo stars)

Desperation is also a planet listed in imperial records for some reason.

Occulade is also located within the ghoul stars. (or rumored to be)