Note: Many entries on these lists will be things that should not normally in found in a |journal= parameter. They are included for two main reasons:

1. poor template usage – for example, if a website/publisher is put in a journal parameter by mistake (|journal=UnreliableWebsite.com) these will be picked up
2. redirect detection – oftentimes Wikipedia will not have an article about a specific journal, but it will have a redirect to its publisher (Unreliable Journal → Foo Society of Nonsense) or some other relevant article (Unreliable Journal → Founding editor)

Note: Most of these categories don't contain publications themselves, but are listed so that publications that redirect to unreliable people and organizations (e.g. Progress in Complexity, Information, and Design → International Society for Complexity, Information, and Design) get included in the compilation.

Hijacked journals are journals whose "websites or branding have been co-opted by a predatory journal or publisher". Meaning that these are legitimate publications, but with fraudsters posing as them.