I am currently playing the whole world of Lunar Lakes. To start with I moved in 2 complete families that I had played before. The Autumns and the Zees.
The Autumns - Arthur, Amanda, Alexander, Andrew, Amelia, August, April, and Alexis (All human)
The Zees - Xandria, Zoe, Xenia, Xenon, and Xiland (witches and aliens)
The Zees also had alien Zasarn and a simbot named Betty at the start. Zasarn has died and Betty became a human when she started dating a sim. Betty had extensive plastic surgery to get rid of pudding and changed her name to Beatrice. More on her later.
After I moved in those two families I totally annihilated every other sim in LL.
Next I moved in another family, the Tiptons, that I had just started last year. I had not played them very long and they only had one child so far. Since then they've had 3 more kids.
The Tiptons - Theodore, Tatiana, Tyler, Thomas, Tony, and Tamara (Humans and Fairies)
Next I moved in 28 single sims to watch which sims get together. I had originally planned to stay with the Zees, but that only lasted until a baby in another household aged up to toddler.
I have my lifespan at 1299 days. Baby - 2 days; Toddler - 7 days; Child - 75 days; Teen - 170 days; Young Adult - 395 days; Adult - 450 days; and Elder 200 days.
Lunar Rainbow Sims
Sims 4 should've been called "The Sims: Stepford Families Edition"