AFAIK, cadets who pass their trial of position (blooding) become full members of the warrior caste. Non-MechWarriors, like Elementals, may receive the rank of warrior if they haven't passed their ToP with more then one kill. If their clan does not use a specific rank insignia for this rank, their daggerstar (colored differently for each branch) serves as rank insignia.
MechWarriors retain a special role, since technically their only warriors (rank) but since they're the sole members of their point, they're de facto point commanders. Are you sure MechWarriors of Clan Ghost Bear are instantly promoted to point commander upon passing their ToP?