How can I get a list of registered fieldtypes using code? I've looked in the source but as far as I can find it can list the fields registered to a post-type or postid, but I need to list all various fieldtypes and subsequently the fieldnames that are registered across the different rwmb_meta_boxes.
Not really necessary to drilldown into the groups, just top-level fieldnames.
You can get all fields registered by parsing the meta boxes' configurations. All of the meta boxes' configurations can be access via rwmb_get_registry( 'meta_box' )->all().
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