Everything is said in the title but just to clarify, yes we could technically “insert” one by typing ![[kanban name]] but it doesn’t display as expected because I think it is in markdown so…
“How to display a kanban inside a note”
You mean you’d like an official support for a kanban-format?
Because i think they’re planning one for bases.
Other than that there are a lot of Plugins doing it.
I personally like the one simply called “Kanban”. Not sure if it’s still maintained. There hasn’t been an update for 2 years. But it has everything i need, is pretty easy to use and just works.
Other than that, the Plugin “Operon” is very actively developed right now. I did not have the time to look into it properly. But maybe it’s something that fulfills your needs?