Think this also has to do with what is available / what is being made at the moment.
Sure there are a lot of vn's being made.. but lets be honest.. There are very few actual good ones with good renders and a good written story.
+ the good ones tend to take longer releasing updates.
So the good ones get a ton of fans, even if you are not all that into the genre simply because of the renders and the good writing.
I'm waiting for the new update of Waifu Academy... I not really into the school / college genre... young dude mc going (back) to school or a new school ,, you know the general story line that has been done and is being done in so many others.
but i like the writing, the comedy/jokes that is used, the way music is used to enhance the scene, and the general flow of the relationships.
So i'm waiting for it and looking forward to playing it.
Unlike what i do with most of the other games. They are more of a play to pass the time in between updates i look forward to,, or in between AI renders being finished on my desktop

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I voted for Slice of life and medieval,,, + fantasy and sci-fi ,,, cause if i'm in medieval times,, that's what it is as well.... + i like Eternum for the same reasons as Waifu Academy,, so i had to add those tags.