Some really nice stuff there. Particularly like the cultists, the gug, and Jenkins, and the heavily blinged-out demi-lich is a nice nod to Tomb of Horrors.
How many sculpts of Jenkins are there, three? Six? Hard to tell from the one group shot. They'd make some interesting add-ons for anyone doing a ratman/Skaven project, can never have too many freakish rat-mutants.
The gug's an interesting random monster but not quite what I envision from Lovecraft's description, old as their sculpt is RAFM's still got the crown on that. Better than some takes on the subject though, the last Reaper one is just sad.
If it weren't for the modesty loincloth your gug would've made a nice Vor Growler Warpfang mini. As it is it'll still serve nicely to terrify some fantasy RPG delvers or murder Frostgrave treasure hunters or something.
Hmmm. Much like Scotsmen and their kilts, Modest Gug makes me wonder what it's hiding. Maybe it's not just their arms that fork?