Hi @majorpayne, this forum is for both free and paid users, however, it is not managed by ACF and the regular ACF support does not answer questions here. As @pjeaje says, this forum is for getting help from other users. There are some users that spend more time here than others, like myself, but help is not guaranteed. Sometimes questions do slip by, and in some cases people may not be able to help either because they don’t know or the question is not clear.
As far as your question goes, it is actually not altogether clear what you meant by “Default WP Editor”.
The default editor is not gutenberg. There is nothing in ACF that will allow you to create a custom field that uses this type of editor.
You have a choice between the textarea field or the wysiwyg (tinyMCE) field types. The textarea field will allow users to enter HTML, but does not have any way to add controls. The wysiwyg field as mentioned by @pixelsandthings has controls and has options for the type of controls that will be added. You can also customize the toolbar of these fields using a filter https://www.advancedcustomfields.com/resources/customize-the-wysiwyg-toolbars/
