i am able to create a new field in a sharepoint list using the "createfieldasxml" method of "fields" endpoint. There is a way to add this field to all content type, and not just to the default content type? The other way i thought is to add manually every field i need to all the content type, but it's not the best solution. I did not find in the documentation that parameter, but it is present in the csom approach.
Thanks