I came across Obsidian yesterday and downloaded it. I have not sat down to mess with it yet. I have never heard of Logseq and will take a look. Thanks!
It installs as an apache module and I am building a flow from my load balancers to hit the apache/SP and proxy some traffic to the application after authentication success so we can create our login session.
I have a PoC going now, but the documentation is not terribly clear to me and it is really confusing me about some options I need to tune.
For my initial testing, I built the SP and used https://samltest.id/ to test against an IDP.