Check out bludit.com (don‘t mind .com), stores posts in static files (front matter or md, not sure), has some plugins and themes. Worth a look.

On my „check later, no time at the moment list“ ist publii (https://getpublii.com/) - maybe also worth a look.

Would have said baikal if you haven’t alteady mentioned it. Can’t confirm that it’s a bitch to maintain, runs in my webjail for more than a year now. (Before I used nextcloud which IS a bitch in all matters…) The only hiccup was self induced, forgot to install it after php upgrade (FreeBSD, pkg is named php83-baikal for example).

Specifically for webdav (Joplin sync) I use dave, though unmaintained no issues so far (internal network only, not web facing).