This is what I have found out so far as what family members of the houseguests came to the finale/L.A.
Adam-mom, brother
Ryan-parents, sister
Sheila-son
Sharon-sister
Natalie-sister
James-nobody
Joshuah-mom
Chelsia-nobody
Matt-mom
Allison-nobody
Alex-mom
Amanda-sister
Jen-mom
Parker-nobody
Jacob-nobody