A few of my favourites:
My OG, my favourite, my real one, my most canon of all: Lady Aza Lee (Aza) of Corval, ethical schemer beloved by everybody, who found huge relief and her best life in marrying Lisle. Her own sexuality is somewhere between aroace and a big damn shrug, so the question is whether she will participate or just watch when she arranges for her excellent friend and partner in crime Zarad to visit her and her husband, but that is definitely happening the instant Lisle slips. He is all at once terrified, in awe, and so grateful of her power.
In another life, the marriage is still a great friendship, but the lady is having an extremely romantic affair with a certain Grand Duke. Convenient for everyone!
Alestes (Al) of Hise, loud and bright and charismatic but absolute idiot with zero people-savviness who won her place in a drinking contest and had no idea what the heck was going on at any point. She was such a disaster that she failed to figure out what happened to her mother, and even, horrifyingly, failed to save Imogen. Somehow, a devastated Ria still agreed to being kidnapped, so this charming moron got her gay happy ever after anyway. (Her name is a reference to Rusty Quill's queer anti-colonialist pirate podcast Trice Forgotten!)
Countess Andromaque (Andy) of Wellin, who I thought was going to be a bit of a boor but ended up surprisingly much more academically & emotionally intelligent (she even befriended Lyon and got him involved!), eloquent and insightful than I planned, and married Hamin, to the surprise of no one back home apparently. Was delighted to find out this was a bi4bi affair. (In another life, Hamin broke up with her when she refused to leave with him and abandon her people. A very strong and practical character with no time for subtle manipulations.)
Lady Ianthe of Revaire, gleeful immoral and manipulative little [BLEEP] who got close to Clarmont then romanced Gisette, happily betrayed the rebels to her, and ruled Revaire with her husband and girlfriend. Happy ever after for them and them only! (Yes, based on The Locked Tomb's Ianthe Tridentarius. I needed a character to channel in order to be that awful.)
Lady Vivienne (Vivi) of Revaire, who made up for that by romancing & marrying Clarmont and fixing Revaire (and did a p good job at the rest of the world as well, with the help of Avalie). Also very manipulative, but mostly ethical! ... in this life, at least. In another life she did a lot of murder and also betrayed Clarmont while engaged to him. I just wanted to see what happened okay.
In another life, she had a shockingly earnest and cute romance with Gisette, and secured a lovely happy ending for the two of them with Gisette royal advisor to a pacified Revaire.
Azira (Zira) of Corval, the people-savvy prodigy who cheerfully drove Lyon mad; not as much of a nerd as he is, but very smart, eloquent and stubborn and very very teasing. A big point of their marriage is that she takes the lead when social events and politics need to be done while her husband stays at home reading happily. She was also a terror in Corval, out-blackmailing her blackmailer, befriending both Zarad and Avalie, and managing to find All the secrets ever.
Lady Mei Lian (Xiao Lian) of Jiyel, asexual and autistic history & plants nerd who bonded with Emmett over nerdery, refused to accept the illogical and untrue things he believed about himself (I think she called his dad something very rude), and is having a grand time getting really invested in the logistics of running their earldom (especially the imported crops). Unsurprisingly, she also befriended Lyon, and to a lesser degree Avalie, though Lian's complete and utter lack of interest in people and their schemes and games was apparently disappointing.
Princess Clémence (Clém) of Arland, who managed to both serve her kingdom and find her freedom in marrying Ana in the absolute cutest romance ever. She was a very proper princess totally out of depth in terms of plot and people-skill, but she tried hard and managed to grow in her small ways (including learning self-defense!) and I'm so proud of my little femme lesbian who dances around the campfire with her strong wife who loves her so much. She was very interested in Skalt's culture and nature and became a teacher there!
And finally, the much more insightful and capable Princess Verity (also Vivi) of Arland, who said [BLEEP] to her family and (with the help of all other NG+ bonuses and very VERY careful planning) upheld Katiya's Legacy with Jasper. ✌️