This kind of comment betrays you up front as from the "You can't make me see" school of creationism. Well, that's practically all of you anyway.
Some of the skulls are unconstestedly human (except perhaps contested by you). The question is where do the apes stop and where do the humans begin?
Some interesting results have been arrived at already. In fact, we've pretty well established that while creationists will usually claim that one thing is "Just another kind of ape" and other thing is "Just another man within the allowable variations in kind," one creationist's "Ape! Just an ape!" will be another creationist's "Man! Just a man!"
Solid documentation of this phenomenon.
How can a "scientific discipline," especially one that claims apes and humans are fundamentally and obviously distinguishable from humans, be confused and give answers all over the map on what is an ape and what is a man?
Note that evolution actually predicted in advance that specimens--let's call them "transitionals"--should once have lived, specimens with a mix of features which would drive bin-lumpers crazy. Now in case after case after case we have found them, and Luddite naysayers are unhappily trying to ignore it all away or shift the question to, "But where are the transitionals between that one and that one and that one and that one and that one?"
But I digress. The main strategy is to draw a perfectly arbitrary line somewhere and pretend that it is uncrossable.
One particularly famous Young Earth Idiot named Duane Gish lumps one particular specimen based on a skull cap solidly into the "ape" bin, but another specimen of the same species (Homo erectus) which displays the exact same skull cap appearance into the "human" bin.
Java Man and Lake Turkana Boy.
This buffoonish science has nothing to teach us. You can't learn anything playing these kind of childish Lawyers and Liars games.