I Caitiff
Caitiff are rarely played on their own, but they often offer low capacity vampires that can complete crypts for other clans and builds. Now a clan, they were before considered as vampires without a clan: it explains why they have no library clan cards at all.
Anarch Convert
played in 447 decks,
typically 1-5 copies
The most played Caitiff by far, he is an easy and relatively cheap way to make vampires Anarch, and can even be used to smooth crypt rotation a bit.
Antoinette DuChamp
played in 66 decks,
typically 1 copy
Two disciplines for 1 pool is relatively cheap moreover her group makes her an easy inclusion. She is most often seen alongside other Caitiff in very fast crypts.
Franciscus
played in 64 decks,
typically 1 copy
Seen in builds, alongside Zöe and Isabel de Leon, he is often included in Weenie AUS decks.
Maldavis
played in 45 decks,
typically 1 copy
Often seen in builds, sometimes alongside Neighbor John, her downside is rarely a problem and 4 pool for superior is relatively cheap. Still, her more recent (2016) Maldavis (G3 ADV) is even better.