Other verticals that HN occasionally covered are: business, health, literature, history, science, politics, religion, philosophy, etc.
Are there any other similar sites focused on these verticals?
https://www.bogleheads.org/ for finance and investing
https://lobste.rs/ for tech, slower than HN
Also, here’s a starting point for your search from a previous thread: https://news.ycombinator.com/item?id=29214788