Comment by bunsenhoneydew

You may already do this but if you haven’t, check out the excalidraw plugin in Obsidian: https://github.com/zsviczian/obsidian-excalidraw-plugin

Zslot has put an incredible amount of work into it and it extends excalidraw to have a lot of additional capabilities. You can also use it within Obsidian canvas for some of the flow stuff you mention but you could very likely just use the plugin.

Zslot is constantly updating it too so you get new features and updates almost every other time you open it. Amazing work done there.

And Obsidian is just awesome too :)