I was about to start on my backlog of stories then remembered there's some sims outside the households that you'll need to know.
First is Olive Grimm. She exists between my regular save and my timeless save (afterlife/forever save). She is married to the Grim Reaper and looks after Captain Whittaker who is in ghost form since he can be in so many saves at once.
James Ryan aka Alexander's fiance
James was unhappily married to Ophelia before he met Alexander. The two dated before James proposed despite autonomous proposals being disabled. Ophelia succumbed to cardiac explosion over James leaving her. She is not missed. He owns a large mansion.
Paris is Deanna's girlfriend. Being spawned into the world as a teen she is technically alone but in my head she lives in a foster home with all the other parent-less sims. She and Deanna both still have crushes on each other which I think is the most adorable thing.
Rounding out Deanna and Reece's friend group are step siblings Noe and Tamika. They live on the same street as Deanna. The four have been friends since childhood and remain close in their teenage years.