Do all of the trolls have powers? Its seen that the serkets can control minds, the captors had psionocs, and tavros could talk to animals, ( I think its mentioned that aradia could talk to the dead even before she was killed) but would the others also have powers?

Have you like forgotten about Aradia’s obvious telekinesis aside from her Dead Communion? Some Trolls seem to have psychic powers. Rusts with telekinesis and communion with the dead, Bronzes with animal communion, Golds with Psionics, Jades with Rainbowdrinkerism, Ceruleans with mind control, Indigos with strength, and while not a power, Seadwellers live practically forever.