long time I did not post anything, but I am still reading the news from time to time :-). And believe it or not, I even played a game (after two years off) recently and found it quite nice.
Interestingly, Harvey Walters was the example character sheet in the CoC rpg. Another one that has an CoC origin is Montery Jack (see here).
The ones I like most (in terms of story/visual art/story) are:
(maybe I could add some other ones)
They have something that appeal strongly to my mythos sensations.