There's really no point in arguing this with you since you're just going to use your own private definition of "kibble" when it comes to valkyries and another definition entirely when it comes to transformers.
But *even* if we go by your definition... again, a vakyrie has it's engine/legs exposed... okay, the one thing serves two functions, but fine, let's say it is kibble. Jetfire has TWO pairs of engines in jet mode, the jet appropriate engine nacelles mounted on the wing which is appropriate for the design and then another set of engines, not serving any possible purpose, sitting there under the wings, mounted diagonally. It also has a complete set of legs, feet, arms and hands, fully exposed, the arms and hands actually holding on to a gun which the SR-71 isn't even supposed to have.
By *any* possible stretch of the term *kibble* Jetfire has far more. Why? Because he has *robot only* parts, fully exposed in Jet mode that serve *zero* function in jet mode, they are just there. In fact, every jet transformer has more kibble because they *all* have robot only parts and pieces exposed in their jet mode. Even the Masterpiece seekers have a mess of unique robot only features fully exposed on their underbelly that are not only not found on an actual f-15, but don't even serve any fictional purpose in jet mode.
And just as an aside, if we use your definition of kibble, Optimus Prime is 100% kibble in every mode.