On that chart if something is import only then it is marked as such - eg FBX for Apprentice - a check means that it will import and export which for Indie is the case for FBX.
Robert Magee Senior Product Marketing Manager SideFX
That page is not up to date (doesn't include gltf, for instance). The error message in Apprentice seems to imply that FBX and GLTF require Houdini Core, so I was confused by that too. I want to upgrade, but want clarification on that first.