Malibu was quite the comics empire. Bravura and Ultraverse came pretty late in the company history but I sort them separately within Malibu, alongside their other imprints like Amazing, Aircel, Adventure, Eternity, Imperial, Pied Piper, Platinum and Wonder Color. I started a project to make a complete Malibu checklist, here - viewtopic.php?f=40&t=32249
I keep CGW separate within Dark Horse. We have one of those checklists around here too.
Several First comics properties ended up at Dark Horse. Nexus is another example and that is how Nexus became creator-owned; when Dark Horse bought whatever publishing rights to Nexus that First had, they gifted any claim to Steve Rude and Mike Baron.
'Breed III was published by Image.