Find all available modules from GroupIO

Another option would be to do:

# First pass to get the list of IOs available
find_package(ITK CONFIG REQUIRED)
include(${ITK_USE_FILE})

# Create list of avaialble image formats
foreach(ImageFormat ${LIST_OF_IMAGEIO_FORMATS})
  if (NOT ${ImageFormat}_image_module_name )
     list(APPEND IOList ITKIO${ImageFormat})
  endif()
endforeach()
find_package(ITK COMPONENTS IsotropicWavelets ${IOList} REQUIRED )
include(${ITK_USE_FILE})

I haven’t tried it, but I think it should work.