I'm afraid there are... hundreds of them. Here's one different (for me again)
Least-squares method.
Using 1 population approximation:
1 Greek_Macedonia @ 3.882039
2 Greek_Thessaloniki @ 4.376761
3 Greek_Greece @ 4.401597
4 Albanian_Albania @ 4.674010
5 Greek_Peloponnes @ 4.825310
6 Greek_Athens @ 5.509539
7 Italian_Abruzzo @ 6.368411
8 Kosovar_Kosovo @ 7.006184
9 Greek_Greece @ 7.200730
10 Italian_SouthItaly @ 7.488135
11 Gagauz_Gagauzia @ 7.581893
12 Sicilian_Sicily @ 7.771745
13 Jew_Ashkenazi @ 8.452600
14 Jew_Ashkenazim @ 8.839959
15 Bulgarian_Bulgaria @ 9.615767
16 Maltese_Malta @ 9.666642
17 Italian_Tuscany @ 9.893415
18 Jew_Ashkenazi @ 9.982136
19 Bulgarian_Bulgaria @ 10.070098
20 Macedonian_Macedonia @ 10.606830
Using 2 populations approximation:
1 50% Greek_Greece +50% Kosovar_Kosovo @ 2.629379
Using 3 populations approximation:
1 50% Greek_Greece +25% Kosovar_Kosovo +25% Macedonian_Macedonia @ 2.340798
Using 4 populations approximation:
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ +++++
1 Bulgarian_Bulgaria + Greek_Greece + Greek_Greece + Kosovar_Kosovo @ 2.273316
2 Greek_Thessaloniki + Greek_Greece + Greek_Greece + Macedonian_Macedonia @ 2.289696
3 Greek_Greece + Greek_Greece + Greek_Greece + Macedonian_Macedonia @ 2.315750
4 Greek_Thessaloniki + Greek_Greece + Greek_Greece + Montenegrian_Montenegro @ 2.328338
5 Bulgarian_Bulgaria + Greek_Thessaloniki + Greek_Greece + Greek_Greece @ 2.334846
6 German_Germany + Greek_Greece + Greek_Greece + Greek_Greece @ 2.336279
7 Greek_Greece + Greek_Greece + Kosovar_Kosovo + Macedonian_Macedonia @ 2.340798
8 Greek_Greece + Greek_Greece + Greek_Greece + Montenegrian_Montenegro @ 2.369079
9 Bulgarian_Bulgaria + Greek_Greece + Greek_Greece + Greek_Greece @ 2.371108
10 Albanian_Albania + Greek_Greece + Greek_Greece + Macedonian_Macedonia @ 2.381143
11 Greek_Greece + Greek_Athens + Greek_Athens + Serbian_Bosnia-Herzegovina @ 2.388419
12 Croat_Croatia + Greek_Greece + Greek_Greece + Greek_Athens @ 2.388738
13 Albanian_Albania + Greek_Greece + Greek_Greece + Montenegrian_Montenegro @ 2.416274
14 Albanian_Albania + Bulgarian_Bulgaria + Greek_Greece + Greek_Greece @ 2.422297
15 Greek_Greece + Greek_Greece + Greek_Athens + Serbian_Bosnia-Herzegovina @ 2.434038
16 Bulgarian_Bulgaria + Greek_Thessaloniki + Greek_Greece + Greek_Athens @ 2.442889
17 Bulgarian_Bulgaria + Greek_Greece + Greek_Greece + Greek_Athens @ 2.451130
18 French_NorthwestFrance + Greek_Greece + Greek_Greece + Greek_Greece @ 2.452273
19 Greek_Greece + Greek_Greece + Greek_Greece + Serbian_Serbia @ 2.457347
20 Greek_Macedonia + Greek_Greece + Greek_Athens + Montenegrian_Montenegro @ 2.459517
Least-squares method.
Using 1 population approximation:
1 Greek_Macedonia @ 3.882039
2 Greek_Thessaloniki @ 4.376761
3 Greek_Greece @ 4.401597
4 Albanian_Albania @ 4.674010
5 Greek_Peloponnes @ 4.825310
6 Greek_Athens @ 5.509539
7 Italian_Abruzzo @ 6.368411
8 Kosovar_Kosovo @ 7.006184
9 Greek_Greece @ 7.200730
10 Italian_SouthItaly @ 7.488135
11 Gagauz_Gagauzia @ 7.581893
12 Sicilian_Sicily @ 7.771745
13 Jew_Ashkenazi @ 8.452600
14 Jew_Ashkenazim @ 8.839959
15 Bulgarian_Bulgaria @ 9.615767
16 Maltese_Malta @ 9.666642
17 Italian_Tuscany @ 9.893415
18 Jew_Ashkenazi @ 9.982136
19 Bulgarian_Bulgaria @ 10.070098
20 Macedonian_Macedonia @ 10.606830
Using 2 populations approximation:
1 50% Greek_Greece +50% Kosovar_Kosovo @ 2.629379
Using 3 populations approximation:
1 50% Greek_Greece +25% Kosovar_Kosovo +25% Macedonian_Macedonia @ 2.340798
Using 4 populations approximation:
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ +++++
1 Bulgarian_Bulgaria + Greek_Greece + Greek_Greece + Kosovar_Kosovo @ 2.273316
2 Greek_Thessaloniki + Greek_Greece + Greek_Greece + Macedonian_Macedonia @ 2.289696
3 Greek_Greece + Greek_Greece + Greek_Greece + Macedonian_Macedonia @ 2.315750
4 Greek_Thessaloniki + Greek_Greece + Greek_Greece + Montenegrian_Montenegro @ 2.328338
5 Bulgarian_Bulgaria + Greek_Thessaloniki + Greek_Greece + Greek_Greece @ 2.334846
6 German_Germany + Greek_Greece + Greek_Greece + Greek_Greece @ 2.336279
7 Greek_Greece + Greek_Greece + Kosovar_Kosovo + Macedonian_Macedonia @ 2.340798
8 Greek_Greece + Greek_Greece + Greek_Greece + Montenegrian_Montenegro @ 2.369079
9 Bulgarian_Bulgaria + Greek_Greece + Greek_Greece + Greek_Greece @ 2.371108
10 Albanian_Albania + Greek_Greece + Greek_Greece + Macedonian_Macedonia @ 2.381143
11 Greek_Greece + Greek_Athens + Greek_Athens + Serbian_Bosnia-Herzegovina @ 2.388419
12 Croat_Croatia + Greek_Greece + Greek_Greece + Greek_Athens @ 2.388738
13 Albanian_Albania + Greek_Greece + Greek_Greece + Montenegrian_Montenegro @ 2.416274
14 Albanian_Albania + Bulgarian_Bulgaria + Greek_Greece + Greek_Greece @ 2.422297
15 Greek_Greece + Greek_Greece + Greek_Athens + Serbian_Bosnia-Herzegovina @ 2.434038
16 Bulgarian_Bulgaria + Greek_Thessaloniki + Greek_Greece + Greek_Athens @ 2.442889
17 Bulgarian_Bulgaria + Greek_Greece + Greek_Greece + Greek_Athens @ 2.451130
18 French_NorthwestFrance + Greek_Greece + Greek_Greece + Greek_Greece @ 2.452273
19 Greek_Greece + Greek_Greece + Greek_Greece + Serbian_Serbia @ 2.457347
20 Greek_Macedonia + Greek_Greece + Greek_Athens + Montenegrian_Montenegro @ 2.459517
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