cellZone not shown in paraView mesh list

[mwestphal (Mathieu Westphal (Kitware))]

In theory paraFoam and ParaView are the same.

This quotes is from a .pdf distributed by wolfdynamics, not Kitware (developer of ParaView) or OpenCFD (openfoam.com).
http://www.wolfdynamics.com/training/introOF8/supplement_paraview_parafoam.pdf

Here is what OpenCFD and Kitware says about ParaFOAM and ParaView:

I want to visualize my OpenFOAM simulation results with ParaView but I'm confused, which version should I use ?

Short Answer: go to paraview.org/download download the last version of ParaView available Use it to visualize your results Long Answer: OpenFOAM ships with a script named paraFoam, which can be used to call ParaView with custom OpenFOAM-specific reader modules, as well as with the standard reader that comes with ParaView/VTK. As stated in the OpenFOAM wiki, There is almost no reason to use these particular reader modules instead of the official binary release. Also, this discourse can…

That being said, just download the last released version of ParaView, 5.11.0

https://www.paraview.org/download/