The Tempest’s crew are Alec Ryder, Ryder, Kallo Jath, Darack, Vetra, Peebee, Liam Kosta and Cora Harper.
Drack is a Krogan. Vetra is another member of the team. Pelessaria B’Sayle, or Peebee is Asarai. Liam and Cora are human. We know for sure that Cora and Peebee can act as romantic interests for the main character. Which characters can be romanced depends on which Ryder you choose.