first 3 aren't really much different, they just hit harder and have more health.
Tortos: Snapping bite hits for about 350K if you don't time your active mitigation for it. If the raid fucks up kicking the shells you will wipe to furious stone breath.
Ji-kun: you may want/need to mop up the green shit when you're not tanking.
Durumu: the colourblind phase works differently, you'll probably want both tanks to stack in the yellow cone and just follow it round. Lingerring gaze pools also slow, so shouldn't be trode in whislt running the maze
Primordius: you will need to pay attnetion to his extra abilities, Metabolic boost can be nasty if you're not ready to counter it and Volatile Pathogen (massive dot) and Acidic Spines (missiles with splash damage) is a concern compared to LRF
Dark animus is very different. you don't really want to take more than 2 Small golems at a time, you want as few as possible medium Golems (i.e none), and you don't really want to take more than 1 large golems (don't take more than 4 stacks of explosive slam), once DA is up himself everyone should nuke that, and you should have a DPS break anima ring for you.
Qon: doesn't really change, probably want to swap on 2 stacks of impale rather than just solo tanking it
Twins: swap on 2 stacks of the fire debuff
Lei shen: swap on decapitate, run away when its being cast at you, far away. Fusion slash's knockback is huge, don't get knocked off. Be aware of the power conduit levels, don't fuck it up make sure you move him at the right time so you don't overload the worng conduits. Bouncing bolts will continue to bounce (and spawn adds) until they are caught. Lightning whips floor residue hurts