Board Thread:General Discussion/@comment-32852560-20190118141002/@comment-34804319-20190120170830

"According to the ICANN Dashboard (Domain Name) report, the composition of the TLD is diverse, including cultural institutions, associations, sports teams, religious, and civic organizations, open-source software projects, schools, environmental initiatives, social, and fraternal organizations, health organizations, legal services, as well as clubs, and community-volunteer groups." - Wikipedia

And as per FishTank "While there is no specific registration restriction to the .org TLD, the communities moving to wikia.org largely fall under what one would consider traditional .org sites. Advocacy, historical, political, religious, etc."