References above are to Genetiker's K=16 analysis, which he has since replaced with a more extensive database of K=14 analysis (the basis for my post) - the categories are quite different. It indicates that ATP3-like features in Atapuerca samples tail off into the third millennium BC, suggesting that his kin either moved out or were reproductively unsuccessful. At least, it doesn't look like they wiped out and replaced all the Iberian men.
I don't think it is a coincidence that the nearest sample to ATP3 autosomally is another European M269 (Croatian Z2103), and that its root looks to be the same as for R1b Bell Beaker (Eastern Balkan). But, if anyone, it seems to have been French Bell Beaker (an EHG/EEF mixed population) that led to the decline of indigenous Iberian men, rather than the kin of ATP3 or Yamnayan hordes direct from Russia.
I don't think it is a coincidence that the nearest sample to ATP3 autosomally is another European M269 (Croatian Z2103), and that its root looks to be the same as for R1b Bell Beaker (Eastern Balkan). But, if anyone, it seems to have been French Bell Beaker (an EHG/EEF mixed population) that led to the decline of indigenous Iberian men, rather than the kin of ATP3 or Yamnayan hordes direct from Russia.