You can find all the dragonbuffs under the skill section. There is no need for them to be on the calculator itself. The calculator was meant to make builds. The transformations may be on there, but there are also skills that require you to have the transformation.
How does it feel incomplete? The only universal skills that we have are KoK and Guard, and both of those have levels (hence their inclusion in the skill calc). Dragonbuffs are universal (meaning anyone can get them) and have no levels, so there's no real point to them being included.