I wanted some non-standard families, so here they are!

adult and teen sisters, 663K

adult with child and toddler siblings, 1.08M

husband and wife, 504K
Warning: the Raines' are likely to have babies with very narrow, receding chins, which change to better proportions as they grow up.

My Sims:
1) Are CAS created as the children of CAS created (and deleted) Sims.
2) Have no relationships outside the family
3) Have different dominant/recessive genes.
4) Are residents of an empty 3x1 lot.
5) Have randomly determined aspirations, turn ons and turn offs.
6) Wear only Maxis original clothes, hair and makeup if applicable.
7) Have been minimally modified by SimPE to get the relationships I wanted. Only the Family Ties resource and the relationship and memory sections of the SimDescription resources have been changed.

University, Nightlife and OFB are required!

I'm willing to try other odd families if you've got a request!