Interesting but I don’t think the forger from the set you posted (and discussed in another posting) signed these signatures. I think there are quite a few differences in form and flow to see they are not signed by the same hand. The forged / fake signatures look as if they were signed slowly trying to get the form correct. They lack the natural flow of an autograph.
Well, if you're going to forge Beatles signatures, focusing on early signatures that aren't well known might be lucrative. Clearly, if fakes, these need more research.