I dont see Canopus or HX/HDX or Cineform in the list of supported input video formats. What other Digital Intermediate format is supported by Vegas (Magix) Movie Studio 13?
I'm not 100% sure, because I use Vegas Pro, not Movie Studio, but I think those formats would be supported if you installed the codecs. Cineform is installed with GoPro Quik and "Canopus" is now Grass Valley HQX. Avid DNxHD is similar but Quicktime only. Sony XAVC Intra is included with Vegas and makes a pretty good intermediate.
I see Cineform and Grass Valley HQX in my Sony Movie Studio Platinum 13, so I must have installed the codecs
(GoPro Studio at the time).
As for XAVC Intra, (S)MSP 13 has only XAVC S. The link below discusses the "Steam Powered" versions, but it's probably valid enough for the "standard" versions.
It would have been helpful to see a similar detailed comparison table of these features on the SCS site at the time as well. Maybe MAGIX will take note. We can always hope, can't we.
Note that (S)MSP 13 will "automatically create video proxies for Ultra HD media", if you have that option checked in Preferences > Video.