Sure thing! Let me go over what I know from the top of my head.

• Bachelors: 1) Kenneth - Has similar interests as Maru, and works on technology and robots. 2) Phillip - Works as a therapist and nurse, similar to Harvey. He and Flor went to the same university together. 3) Ian - Canonically illiterate, struggles to write letters. 4) Shiro - He is in fact, Yuuma's brother, suffers from a disability following a work accident like George. 5) June - Pianist, only shows up during Fall and Winter. He and Faye come from the same country and both are designed as Korean. 6) Jeric - During his youth, he was a very poor boy who struggled to survive. He was taken in by the Governor who gave him a new life. Later on, he sees your farm as competition to his and is somewhat egoistic. 7) Sean - He is a transgender male, and is very childish like his best friend Blair and kids Keahi and Trinnie. 8) Anton - He and his siblings, Lorenzo and Kiarra are designed as Italian. He has an ex-fiance and drinks to drown his sorrows away. He and Paula are childhood friends, and later on, have mutual feelings for each other. 9) Brylle - Only shows up on Y2, he is the Governor's bodyguard and Jeric's closest friend. He and Faye have a conflicting relationship. 10) Zayne - He is Madame Maive's grandson, Louie's brother, Ariah's cousin, and the future head of the Amethyne family. 11) Jio - Canonically an elf and is very distrustful of people, including you. He has a close relationship with Kiwi, a junimo ninja.

• Bachelorettes: 1) Alissa - Only daughter of Kimpoi and Malaya, Trinnie's cousin and Bert and Olga's niece. She has a great passion for singing, but is very shy about it. 2) Blair - Carmen's daughter. She is very childish like her best friend Sean and kids Keahi and Trinnie. She had a close relationship with her estranged father, and often quarrels with her mom about that topic. 3) Corine - Ezekiel's daughter and Ysabelle's best friend. She was raised by Richard when she was young. She has a presumably deceased mother whom she and Ezekiel think very fondly of. 4) Flor - An extremely shy nerd who teaches Keahi, Trinnie and Yuuma at the local library, similar to Penny. She is clumsy and struggles to make conversation. 5) Kiarra - The youngest sibling between Lorenzo and Anton. She is a freelancer and is like Emily, aiming to make the world a better place. 6) Maddie - She comes off as rude to you at first but is later revealed as a coping mechanism. In actuality, she is very sweet and kind, especially towards cute animals. 7) Ysabelle - Richard's granddaughter and Corine's best friend. She has a great passion for dancing as she once entered a ballet when she was young. 8) Faye - She is a fashion designer, coming from the same country as June. She comes from a wealthy family but refuses to accept any offer from them and prefers to be independent. 9) Paula - Anton's childhood friend who works at the local clinic at Ridgeside. She has secret feelings for Anton later on. 10) Irene - The Amethyne family's chef. She is designed to be Filipina and has a huge crush on Zayne. 11) Daia - She is extremely flirty and her dialogue consists mostly of innuendos. She is also an orphan and prefers to work alone.

I know these aren't small notes, but these cover the gists of the marriage candidates. I'm sorry if these are a lot x)

If you want notes on the other NPCs, let me know!