I am gonna do the math now.
If there was a 39% East Med/Near Eastern contribution onto Tuscany during the Antiquity and later in Late Antiquity and the Dark Ages there was 20% Northern European contribution, for modern Tuscans it would make them 27% Near Eastern, 20% Northern European and 53% Italo-Etruscan. I now believe a good chunk of E-V13 is actually of Germanic origin. But the 20% AUTOSOMAL impact still doesn't make sense to me, unless the Goths were mixed which is not the case as seen in the study itself. And the J2 in modern Tuscans is around 13% including both J2b and J2a. Some subclades of which are probably Italic. And J1 with (non E-V13) E subclades are like 4%.
Greeks are extremely easy to model, with both historical data and Y-DNA. When I used port-Bronze Age Anatolian vs Levantine in Cretans, it showed zero or very close to zero Levantine and over 30% Anatolian which makes sense by both a historical and Y-DNA data.
Using Slavic, Anatolian and Ancient Greco-Thracians for Greeks works just fine. Italy is soooo strange.
Neither the Goths nor the E-V13 have anything to do with the Germans. There is not a single classic author who to claim such nonsense about the Goths. However, the Goths are directly related to the Getae, who are Thracians. During Antiquity, the Goths were repeatedly identified with the Getae by authors who knew them. We know for sure that they inhabited the Balkans from the 2nd to the 9th century. Maximin the Thracian was born in the 2nd century, and his father is said to be a Goth, on the other hand, Valafrid Strabo testified about the use of the Gothic language in Dobrogea in the 9th century. If the Goths (Getae) of Urfila (Wulfila) spoke German, then for such a long period - 700 years, the Balkans must have been dotted with five to ten thousand German names of rivers, settlements, places.
There are none, I repeat NONE.