Here's a cross between HN & Reddit and some other things, which I think is ok easy to deploy (like signing up for WP.com): there SaaS hosting so one won't need to install oneself ... Otherwise it's Docker images:

https://www.talkyard.io (I'm developing it) — and if you scroll down, you'll notice it adds some improvements on HackerNews and Reddit:

https://www.talkyard.io/#unique-features