Hi all,
Just posting my findings. Probably not enough to catch some of the rare outliers (especially with the gathering classes), but still some good data nevertheless. Thanks to Calinon for providing some of the data. Note that all drops include 6 silver, and the quantity of the amount of listed items that drop varies between 1-3 (except for dissolvants which only ever drop 1).
Battle Jobs (Archer, Marauder, Arcanist) all collecting
N = 58
22.4% Chimerical Felt
22.4% Grade 1 STR Dissolvant
20.7% Grade 1 VIT Dissolvant
15.5% Crawler Silk
10.3% Amphiptere Leather
8.6% Wing Glue
Botanist
N = 18
27.8 % Porcini
22.2% Dravanian Mistletoe
16.7% Grade 1 DEX Dissolvant
16.7% Morel
11.1% Abalathian Mistletoe
5.6% Cloud Banana
Miner
N=23
26.1% Adamantite Nugget
17.4% Chrysolite
17.4% Abalathian Rock Salt
13.0% Aurum Regis Nugget
13.0% Red Quartz
8.7% Hardsilver Nugget
4.3% Steel Mainspring
Fisher
N=18
33.3% Grade 1 MND Dissolvant
16.7% Fanged Clam
16.7% Pipira Pira
16.7% Grade 1 INT Dissolvant
11.1% Coerthan Crab
5.6% Lake Urchin