You know what would be funny? Morden AU but Kenway family drama
Edward has Jennifer and Haytham, both from different mothers but everyone is ok with it (they can work through it), so everyone is chilling when someone knocks the door and this person is Connor
In the most surprised Haytham you're dad (he just decided to meet his father) anyway go fuck around and find out Haytham
And then one day (after Haytham and Connor shenanigans) Edward calls everyone saying it's urgent, what's made every worry because Edward Kenway doesn't just call people to help him! he never did it before!
When they arrived they found an Noa Kim sitting on the sofa, Edward smiled and said "I am a father once again" the chaos resurged after that
"FATHER HE IS YOUNGER THAN CONNOR!"
Bonus: Connor is now happy because he has someone else new in this family and whatever weird friend that old Kenway has (I am pretty sure that Bayek and Kenway would be friends in the most chaotic way)
If you want to keep it as close to canon as possible, Jenny is Edward's kid from his first marriage and his first wife died. He remarried and had Haytham afterwards.
Of course, one where Edward is a manslut who has baby mommas who didn't marry him but still have a good relationship with him would be fun too XD
Adéwalé is the long suffering friend who helps out. Thatch is the bff that is always off doing something crazy.
Edward may have bailed him out as much as Thatch had bailed him out.
And really, Noa Kim's entire conception was due to Thatch just grabbing Edward's arm and going to Korea out of the blue. XD