Is there an advanced but light-weight notes app with content management system + calendar combined in one? (That's not Notion)

Any existing setups in this group? I'd love to know how you do it!

I capture my notes in Google Keep. Two accounts, work and personal, I want to combine into one.

Many of my notes turn into content for my socials - LinkedIn and Medium currently, sometimes Reddit, Slack and YouTube and other channels will be considered soon.

Ideally a quick way to capture - via a lightweight, zippy mobile app like Google Keep, capture via email, or capture via Chrome extension (task management not required)

neat way to organize and view the complete lifecycle of a note - various levels and types of content with channel categorization. All of this I'd want to customize, all of this I'd want to use on mobile

A parallel dimension of knowledge capture as well - Currently I do this in Trello but I really want to make use of external and internal knowledge system into a single personal knowledge library that I can go into each day and work inside until I am ready to pop off content topics

Ideally something like Obsidian graphs for knowledge interconnectivity and enrichment (optional but preferred)

Integrated with a social scheduler (again optional, coz I know it will cost me more)