Form builders that offer an integration with the Gutenberg editor allow you to add any of your saved forms as a content block from directly within the WordPress editor.
Once you add the form block to one of your pages, you can select which form you wish to embed – usually using a drop down within the form block placeholder. However, the creation and the editing of forms still takes place within the form editor plugin.
This feature makes it very easy to add your forms wherever you want in your WordPress site.