@colinwalker I don’t think this accurate. By default, MarsEdit is a rich text editor. It does have a plain text mode that has some support for markdown highlighting, but I think being a rich text editor is something MarsEdit is pretty heavily focused on. That said, none of these try and replicate the block-based editing experience on Wordpress.
@colinwalker I think the lack of block-style editors is also worth pointing out with Ghost. Ghost implemented a totally fresh API that no apps use because its content is stored in a format for its web editor — Lexical, an open source Meta tool. Lexical is an impressive JavaScript editor. But having to use a Lexical format in a new API is rough for third parties.