Best tank is PLD with ochain/aegis shield. Second best is RUN, with fights heavy magic oriented RUN is prefered over PLD, but with physical mobs, PLD is superior thanks to shield dmg mitigation.
Due to high dmg DDs can deal nowaday, its hard for any tank to keep hate unless there are hate mitigation tools like annihilator/coronach, yoichi/namas, decoy shot, trick attack, so normally, melee based setups dont favor tanking. In those cases, the DD will also act as a tank.
Evasion tank became mostly obsolete as most NMs favor AoE dmg, so bypassing evasions checks.
Prefered jobs (based on PUG frequency, not based in performance, as this one is always debatable):
Prefered DDs: SAM, MNK (for overall delve), RNG (for overall battlefield).
Prefered tank: PLD R/E.
Prefered healer: WHM.
Prefered suport: BRD (overall), GEO RDM are becoming common, COR is becoming uncommon.
THF update can change the current preference, but its too little time since update for community to get used to this new possibility.
Again, this is based on how often those jobs are asked by PUGs, by no means Im saying they are the most efficient in their category.