>>18142578
You need to include Yamnaya at minimum. As an Italian your steppe admixture is mixed. It is both Bell Beaker/Corded Ware and Yamnaya due to Greek admixture. You may use both in the model even if it becomes more complicated. The way you measure steppe actually does matter. If you do it right it will eat up Levantine admixture. If you do it wrong you will find Levantine admix in Finland of all places.
Fix your EEF modeling. Don't even bother with Turkey_N. You may use Barcin but you need to also include sources from Neolithic Greece and Hungary. You might even have some Globular Amphora in there.
That said, you should consider using Italy_IA_Republic in some models if you're just trying to see if there's excess Levantine. You should also try Mycenaean sources.