What is the chronological order of Higurashi no Naku Koro ni? I want to know what is (if there is any) the chronological order for this variety series if I'm going to watch it from the start:


Higurashi no Naku Koro ni
Higurashi no Naku Koro ni Kai
Higurashi no Naku Koro ni Kaku: Outbreak
Higurashi no Naku Koro ni Rei


If there is more that I didn't mention, please add it also if necessary.
Diagram from AniSearch. Click to enlarge!

If I am not wrong now and I interpreted the diagram the right way the viewing order of the anime series should be like this. The bold text is the main story!

Higurashi no Naku Koro ni (05.04.2006)

Shared Universe


Umineko no Naku Koro ni (02.06.2009)
Umineko no Naku Koro ni: Uraneko (23.10.2009)
Ookamikakushi (08.01.2010)


Side Story


Higurashi no Naku Koro ni Kira (21.06.2011)


Side Story


Higurashi no Naku Koro ni Kaku: Outbreak (15.08.2013)


Higurashi no Naku Koro ni Kai (06.06.2007)

Side Story


Higurashi no Naku Koro ni Gaiden: Nekogoroshi-hen (02.08.2007)


Other


Higurashi no Naku Koro ni Kai: Ura Higu (21.09.2007)


Higurashi no Naku Koro ni Rei (25.02.2009)