Is there any list of all of the currently available 'data types' we use in GH (meaning the types of information GH Inputs can accept)? I thought it would be usefull to compile one in text form...I am probably missing some...
Point Line Arc Circle Curve Surface Box Twisted Box Brep Mesh Vector Plane Number Integer String Boolean Time Domain Domain2 Shader Colour Path GUID LoftOptions Complex Generic Data[...] [...]
I attached a class view from 0.7 (it's slightly different from 0.6, but not much).
Twisted Box and Loft Options are defined in satellite assemblies (XForm and Surface respectively) so you can't use those.
I actually don't have a list either, and DataTypes are not cached anywhere in Grasshopper. Parameters are cached, but there is not a 1:1 overlap between data types and parameters.