* Monera: This kingdom is a traditional classification that groups all prokaryotic organisms, including bacteria and archaea. However, this kingdom is no longer widely accepted as a valid taxonomic rank.

* Bacteria: This is the modern, widely accepted classification for all bacteria. It is a domain, which is a higher taxonomic rank than a kingdom.

It is important to note that while the kingdom Monera is outdated, it is still sometimes mentioned in older texts and resources.