I have slowly start to collect data from these mobs and a patten already form it's self.
First of all, the data this post will contain is solo and duo farming without any MF gear. The item I keep data of will be blues, rares, gems and tome of secret (Legendary and designs/plans too ofc if they drop for me)
The list is still short, but will be updated all the time.
Solo
Treasure Pygmy (Blue)
BLUE RARE GEM TOME
3 0 0 0
3 0 0 1
2 1 1 0
2 1 0 0
Treasure Goblin (Brown)
BLUE RARE GEM TOME
3 1 0 0
2 1 0 0
3 2 0 1
Treasure Bandit (Black and White)
BLUE RARE GEM TOME
3 0 0 2
3 0 0 4
2 1 0 2
3 0 0 3
3 0 0 3
Treasure Seeker (Red)
BLUE RARE GEM TOME
4 0 3 1
3 0 3 1
3 0 2 1
2 0 2 1
2 0 3 1
DUO
We didn't type down the data from duo farm yet, but so I can already tell that duo farm has a higher rare drop rate.
Treasure Pygmy (Blue)
BLUE RARE GEM TOME
Treasure Goblin (Brown)
BLUE RARE GEM TOME
Treasure Bandit (Black and White)
BLUE RARE GEM TOME
Treasure Seeker (Red)
BLUE RARE GEM TOME
Feel free to post your data and I will add it to the list, just make sure you don't have MF gear (0-20% will be accepted) When we have some more data, more details will come. Please don't post data from just 1 kill, gather data from 5+