This is Supun from HYVOR.
We've released 2.0 of our blogging platform, Hyvor Blogs. It's now open-source under AGPLv3 and easily self-hostable.
Our framework is Symfony and we use Postgres for both data storage and queue backend. It's simple and also have powerful features like real-time collaborative editing, suggestion mode, AI features, etc.
Self-hosting depends on OIDC SSO. With one instance self-hosted, all blogs of your family / org can be hosted there, including custom domain support for each.
Happy to answer any questions!