There are many wikis on the internet that are not managed by the Wikimedia Foundation, but do use their MediaWiki software to power their wiki. Many of these wikis have been archived by Wikiteam, a collection of volunteers that create unofficial database dumps of wikis and upload them to the Internet Archive. We download all dumps made by Wikiteam when the metadata indicates the wiki was licensed under CC BY, CC BY-SA, or released into the public… See the full description on the dataset page:
https://huggingface.co/datasets/common-pile/wikiteam_filtered.