Default note type at root note level.

[darthrater78]

Example, if I have this root note as Excalidraw, I can set it to make every child note Canvas by default.

[Nriver]

You can achieve this using the ~child:template relation. The principle works the same way as the built-in Journal notes.

I’ve prepared an example for you—feel free to import it into your note and take a look:

Excalidraw.zip