Huge thanks to Frack for putting the initial list together. I'll try to keep it up to date.

Amara (aka The Ghost): Baz’s lieutenant, fire genasi.
Bazzle “Baz” Cinderhorn: I don't want to tell you how you feel about Baz Cinderhorn, but I'll give you the following info:
   - None of his workers are unionized.
   - He seems to treat his workers much better than the Cognelius brother.
   - The more illegal activities in which he engages often target factories where workers are treated especially badly.
Crajeon: Former Descendant goon. Firbolg.
Crocklespring “Crock” Cognelius: Son of Sprazzle Cognelius. Brother of JP. Baron of Coglington, known for grandiose factories with arched entryways and flying buttresses.
Cultivated Mind: Goons for Crock Cognelius. Notorious for their magic and in particular for the way they manipulate the minds of those Crock deems in need of manipulation.
Donna Garnagle: Dwarf foreman at Owl’s End
Donnovan: Right hand man of JP Cognelius. He sicked the Steel Resolve on the protestors at Owl’s End.
Dragonfather (deceased): Klaus Jacop, one of Crock's managers. Union-buster.
Flicker: Fire genasi smuggler who boated the party to the island.
Ilga Gyula: Half-orc worshiper of the Gearlord. Formerly of the Descendants. Has a knack for making machines (and entire factories) sentient.
Janpool “JP” Cognelius: Son of Sprazzle Cognelius. Brother of Crock. Baron of Coglington, known for menacing and utilitarian factories.
Klaus Jacop: See Dragonfather.
Luminescent Athenaeum: A library, of sorts, hidden somewhere in the Lower Slopes, where a shadowy network of sages has collected artifacts proving the existence of metallic dragons who were not as evil as their chromatic cousins.
Lysandra: Gnome president of one of the unions Kreo helped to organize.
Magresh: Leader of the Descendants.
The Spark: Baz Cinderhorn’s organization, a reference to a spark of hope.
Steel Resolve: Goons for JP Cognelius who have no purpose other than to break the backs of those who dare dip a hand in his pocket.
Syntus (deceased): Yuan-ti Descendant goon.