Not to go too far on a tangent, but I am aware of two new free competitors in this space that seem very useful. At the moment I am preferring Obsidian, but LOGSEQ is very similar and does many of the same things.
Obsidian is more suitable for narrative compositions of several paragraphs as the basic unit of work, while Logseq is oriented toward outlining in which each point of the outline is the basic unit of work. If you're manipulating paragraphs then maybe obsidian works best; if you're manipulating bulleted outlines logseq has more features.
But both have the ability to produce formatted slides from the data.