This page contains information regarding Star Trek: Lower Decks, and thus may contain spoilers.
(covers information from several alternate timelines)
Following the kidnapping of Doctor Phlox by the Rigelians, T'Pol contacted the Denobulan ambassador to notify him of the situation. The ambassador, in turn, notified Phlox's wives. (ENT: "Affliction")
She attended the Coalition of Planets talks alongside representatives of the Vulcans, the Andorians, the Tellarites, and other aliens. During the talks, she witnessed John Frederick Paxton's crimes against the aliens. (ENT: "Demons", "Terra Prime")
Cold Station 12 personnel
Frylon IV researchers
In 2381, a pair of researchers were examining plant life on Frylon IV. While comparing raktajino to Human coffee, the two were attacked by a mugato, causing them to puff their face as a defense mechanism before running away to notify the authorities. (LD: "Mugato, Gumato")
As of 2152, this family consisted of at least thirty-one members, including three wives, each possessing two husbands in addition to Phlox himself, and five of Phlox's children. He missed all of them while serving on Enterprise NX-01, but wouldn't have given up his opportunity to serve there, via the Interspecies Medical Exchange, for anything. (ENT: "A Night in Sickbay")
Phlox's fifth grandmother
Phlox's fifth grandmother prepared the same soup recipe for each of his weddings. He mentioned this to T'Pol when he had some in 2154, explaining that Chef tried to make it, but could never get it quite right. (ENT: "Doctor's Orders")
Phlox's prejudiced grandmother
Having lived through the last war, one of Phlox's grandmothers still harbored prejudice against the Antarans, to the point of forbidding Phlox to visit an arboreal planet near their star system with some friends. Because Antarans had once lived there, she believed it to be unclean years later.
When he grew up, he never told his children her stories, opting for the truth over propaganda. He was proud to say that all of his children, save his son Mettus considered her beliefs to be outdated.
Phlox's spouses and their spouses
Along with Phlox, his spouses were each married to two other men each, who were, in turn, married to Feezal and other women. One of Phlox's wives lived in the same town as his eldest son. (ENT: "A Night in Sickbay")