The ones that are in my game or have descendants in my game include: Summer Holiday, nearly all of Windenberg, nearly all of Island Living because that's a tribe of indigenous people and a changing world, the Heckings, some of StrangerVille, the Rasoyas, Benalis and Bheedas - though I haven't played the later in ages, the Elderberrys and Judith.
I think most of the EL pre-mades will end up in my game eventually but I haven't gotten there. I'm transitioning to a new generation and that's more likely to be an occurrence for them.
I have a lot of "my own sims" who are several generations down. I also think I'll play the Delgatos and haven't gotten around to working them in. I don't know, I stay open to incorporating more if it makes sense.
Most of my sims are not pre-mades. I like Salim Benali, he married his best friend, an art critic and they have two sons in the apartment next door to the one he starts in. His children are artsy.
The Heckings adopted a son who is a toddler growing up from a foster background.
I've mentioned Raj Rasoya somewhere else. He's long dead but has kids and grandkids. He was happily married to his wife. She stayed at home with five children but he did all of the cooking as a professional chef. She is a busybody about her adult children.
Judith Ward is a trainwreck who was romantically involved with her butler. He used her to get famous and launch his acting career. He was attracted to her but she had an affair with her co-star and he filed for divorce. For unexplained reasons, they still live together at this time and don't discuss anything publicly. Judith might be a problem for other young actors. I think eventually she'll have a child with a custody battle and then she'll be jealous as the child grows up especially if it's a daughter.
The Villareals have all turned out to be pretty interesting for me. I'm now onto their children. Hugo is an interesting character who has a very different personality than his son. He prefers his daughter who is quiet but not the brightest. His son is named Juan Hugo and is on his way to irresponsibly breaking a lot of hearts. Actually, he has one beautiful girlfriend but while Hugo married for love, he is pressuring his son to marry someone suitable. He doesn't approve of how his son raids his globe bar and skips school, sneaking off for adventures. His son actually does homework sometimes and is naturally clever.
Luna and Sergio are married and have three children. I've mostly played with the eldest daughter who is kind of a pampered diva but now has many admirers. Luna and Sergio basically spoil her. Nothing is good enough for their princess.
Sofia Bjergsen is a complete hippie in Oasis Springs. She has twin sons who are older now. They have both grown up. One is a hipster artist in Evergreen Harbor who is struggling with his bisexuality and fatherhood. The other wants to be an actor. I haven't figured out if he'll run into Judith and if so, if he'll be her next ex-husband.
Maaike Haas's daughter is married to Sofia's bisexual son. I'm not quite sure where all that is going but she's a new mother and knits while her husband has jumped into some dumpsters.
Maybe it's kind of a soap opera but it's entertaining. There are some characters of my own, so this was just about the ones connected to pre-mades.
I'm adding Siobhan Fyres to this. She is in my game. She's a successful careerwoman, now a single mother because she's very independent and organized. Siobhan pushes her children to success. Her daughter married a Muslim who was a yoga instructor at the spa. Initially Siobhan did not approve but now she's reconciling to be close to her 10 yr old grandson who takes after her. Siobhan's son Taylor fell in love with a beautiful girl from a working class family in one of the dingy apartments in San Myshuno. Despite parental disapproval the relationship continued and Siobhan is trying to put an end to it. Taylor's secret girlfriend is not going to college and works a retail job. Taylor is going to college. They have a toddler son but do not live together. Taylor visits the small apartment in Evergreen Harbor in which she and his son live. If Taylor marries her, he'll be disinherited in favor of Siobhan's grandson by her daughter.