Reddit used to have a way to get it to list all the NSFW subreddits but I haven't been able to get it to do so for at least the last two site updates. It didn't rank them but you could at least read the subreddit topics.

Edit: This will get you close enough
https://www.reddit.com/r/ListOfSubreddits/wiki/nsfw



Edited by CharlieYup (06/02/22 11:57 AM)
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If I give up drinking, smoking, and fatty foods, I can add ten years to my life. Trouble is, I'll add it to the wrong end.

P. J. O'Rourke