In the Creative inventory, dead tube coral is located differently than other tube corals (tube coral block, dead tube coral block, tube coral, tube coral fan, dead tube coral fan).

Order of dead corals:
Brain (2)→Bubble (3)→Fire (4)→Horn (5)→Tube (1)

Order of other corals and coral blocks:
Tube (1)→Brain (2)→Bubble (3)→Fire (4)→Horn (5)