Ammy:
-The Glutton wants to eat Eidolons. Ammy is so not cool with this. Her best friend is an Eidolon, man.
-Tantarian book in Baron's library, didn't know it was that until way later
-led the planning in Durandal
-Lord Aitchison's repository under Lindblum (session 19 - first major main session hook into personal story)
-revealed 12GIL once it was apparent Ayane's plan had to do with the 12 Gates
-Renegade used to be part of 12GIL, so Ammy tries to milk him for information, but he's a jerk and doesn't help much
-Fetch quest to the Enterprise to get a tiara to help out Nat
-Exploring Mt. Gulug to find out more about the Tonberry civilization, receiving Tonberry spirits' approval
-met major NPCs relevant to her personal story: Noah, Cait, Eiko (sort of?), Ayane, Glutton
-"influence network": Noah, Cait

Lenore:
-found a book by her father in Aitchison's repository (session 19 - first major main session hook into personal story)
-Elena showed up in Lindblum and shenanigans ensued
-Blade shows up at the tournament in Treno, chases after Kraken
-Renegade is in Treno and her father, but he's a jerk and doesn't help much
-Discovered part 1 of a glyph to summon the Magus Sisters on board the Enterprise
-Investigating where the aforementioned glyph led her to in Mt. Gulug, found Cindy's diary and glyph 2
-Elena also shows up again in Mt. Gulug. Drinking actual Shenanigans ensued.
-met major NPCs relevant to her personal story: Renegade, Blade, Elena, Ramuh
-"influence network": Renegade

Nat:
-Epitaph storyline set up in Durandal - Mary is a major hook into the Glutton as a villain
-Met Eiko again in Lindblum, did cutesy summoner-eidolon things - got plot hook of finding Phoenix and Titan who also have memory problems
-Gets regular Crystal visions about her memory (session 2 - first major main session hook into personal story)
-Renegade's a jerk and doesn't help mu- oh wait he gave her the tiara nevermind
-Discovers in Madain Sari that she had agreed to act as a Phylactery for one of Vivi's children - catches onto the hint that the Eidolons who Glutton is after are these very same ones, or it seems like it anyway
-Discovering corrupted Titan, made pact with Brothers afterward
-met major NPCS relevant to her personal story: Noah, Cait, Eiko, Mary, Glutton
-"influence network": Eiko

Theta:
-Kuja's workshop under Daguerreo is now imminently relevant to his task
-Instrumental in exploring Oeilvert due to Terran ancestry (session 10 - first major main session hook into personal story)
-Ayane's entire character is very relevant to Theta, kind of like a personal villain to him
-As a consequence, the major threat to Lindblum and the discovery of mage dolls and the battle that ensued was most relevant to Theta (note also that Lindblum was by far the longest arc in the whole game so far, lasting about ten sessions)
-Establishes the PCs' major base of operations in Treno and gives the mage dolls a place to live - and a place where he can continue his research
-Gets something of a hook to his studies by finding Ambrosia at Renegade's place, but he's a jerk and doesn't help much
-Discover more about Ambrosia on the Enterprise as well as more about technology that will lead him on the way to inventing firearms
-Gets a major hint about his quest when he discovers Vivi's workshop in Madain Sari and the Phylacteries keeping his children alive
-Titan is corrupted by Earth spirits - furthermore corrupted spirits are a plot signal that only Theta is able to follow and has had for a while - it makes him essentially a fiend influence detector
-Revisiting the Black Mage Village
-met major NPCs relevant to his personal story: Vivi's children, Mikoto, mage dolls, Elizabeth, Ayane
-"influence network": Mikoto, Black Mage Village, mage dolls