Refugee activist Ian Rintoul said almost all who flew out yesterday for Los Angeles are single Afghan, Pakistani or Rohingya men.
A Sri Lankan family of four and a Bangladeshi were also among the group.
This brings to 84 the number of refugees who've flown to the US since resettlement began in September.
Mr Rintoul said up to 100 refugees have not had their first interview with US officials who are expected to return to Nauru next week.
He said the big question was whether any of the acceptances will include Iranian or Somali refugees.