Level 50 Dungeon - Underground Chapel Dungeon
No equipments dropped in this dungeon, except only talts which can be found.
Level 90 Dungeon - Ruined Mausoleum Dungeon
Most Valuable item in this dungeon is Arde Dagger
Level 115 Dungeon - Monument of Desire Dungeon
Ledas Shield and Valia recipe can be found in this dungeon
Level 130 Dungeon - Fallen Legwyn Family Dungeon
If you're looking for Petamion, Here's the right place.
Level 145 Dungeon - Hollow Thorn Forest Dungeon
Only Seimos family gears can be found here, for more information read in the description.
Level 175 - Thorny Vines Forest Dungeon
Ignition? Elements or Aias recipe? if yes, go for it!
Level 190 Dungeon - Archmage Tower Dungeon
Magas family gears here, also max Petamion and Sissel bracelet recipe
Level 200 Dungeon - Catacombs Underground Dungeon
Most valuable items here, read in the description for items list