Deleting certain pre-mades?

I don't remember delteing any but I've evicted a bunch. I like letting everyone age on their own and move into empty houses but the game makes some really goofy decisions sometimes. It'll stick a bunch of sims in a tiny house and put a single sim in a mansion. The game also really fails at creating more children as your sims age so I often find myself creating sim families with toddlers and children just so my sims kids will have friends to play with. So yeah, I'll switch some around to more appropriate houses or just evict them.