Anything compared to Duskvol is sunny. That city and its atmosphere is so oppresivley dark and dreary. The sun literally doesn’t shine and no stars illuminate the night sky.

I don’t find Cthulhu horror that dark. Damp and misty sure. With the cosmic/existential horror being rooted in ones insignificance and the ungraspness of the infinite existence there is little explicit need for darkness. It can be dark yes, just doesn’t need to be.

On DrivethroughRPG.com you can browse by rule system
https://preview.drivethrurpg.com/en/browse?ruleSystem=100226

Itch.io has a Forged in the Dark tag
https://itch.io/physical-games/tag-forged-in-the-dark

And I found a list of fan creations on the blades webpage. Not sure how maintained that is but it is there.
https://bladesinthedark.com/fan-creations

The setting of blades is while well crafted utterly dark and dreary. Personally I cannot stand it. So anything that is forged in the dark (what the generic mechanics are called) but with a bit more sun is in my opinion pretty much an upgrade. So if you are interested in the forged family of systems and you find CO’s setting/premise go for it.

Can also recommend you to have a look at the larger FitD ecosystem as there are plenty of goodies.

I run only online so that flavors my methods

1. I’ve run all my games the last five or so years on the same discord server. When games have ended some have left it while others have stayed. So I have a base pool of players already vetted once and are (was) available when I run my games.

2. Generic group finding communities. The LFG here for example, but also various discords.

3. System specific Discord/forums. Here there are folks already invested in the strange system I want to run, only need to find those available.

4. VTT specific channels