There are indeed a lot of similar tools but keep in mind that the tools are not designed specific for WordPress and go far beyond without an API by design. It’s like an iceberg and I understand your confusion because it was like this for me as well in the beginning. The shadowing is kinda annoying but I understand the reasons for this by now. @dshanske has more info on this topic at https://david.shanske.com/2015/01/10/post-types-post-formats-post-kinds/