I played around with nMonte and Global 10. Managed to get some pretty small distances in the end. Though, we need Bronze Age and Iron Age genomes from Southeastern Europe for a better accuracy.

Background (results with commercial calculators):

23andme


FTDNA


MyHeritage


DNA Land



Global 10 nMonte with Ancients:


1) Ancients Europe + Asia wide + Slav_Czech Early Medieval
"distance%=0.031 / distance=0.00031"
Code:
         Dorkymon
                               
Portugal_MN:LugarCanto41  17.65
Slav_Czech:RISE568        17.20
Unetice:I0047             12.40
Minoan_Lasithi:I0073      11.70
Yamnaya_Samara:I0429      11.65
Corded_Ware_Germany:I1534  9.25
LBK_EN:I0054               8.05
Scythian_Pazyryk:I0562     3.60
Scythian_Pazyryk:I0563     3.40
Armenia_EBA:I1633          3.20
Latvia_HG:ZVEJ32           1.25
Satsurblia:SATP            0.35
Minoan_Lasithi:I0070       0.30

2) Ancients Europe + Asia wide
"distance%=0.1058 / distance=0.001058"
Code:
         Dorkymon
                                  
LBK_EN:I0054                 27.25
Unetice:I0047                17.45
Afanasievo:RISE507.508.merge 12.55
Unetice:I0115                10.90
Hungary_BA:I1504              9.15
Latvia_HG:ZVEJ32              7.50
Scythian_Pazyryk:I0563        6.55
Minoan_Odigitria:I9128        4.40
Satsurblia:SATP               2.90
Yamnaya_Samara:I0429          1.10
Scythian_AldyBel:I0577        0.15
Portugal_MN:LugarCanto41      0.05
Unetice:I0803                 0.05

3) Ancients Central + Southeastern + Eastern Europe + Asia
"distance%=0.1023 / distance=0.001023"
Code:
         Dorkymon
                                  
LBK_EN:I0054                 22.45
Unetice:I0047                18.60
Afanasievo:RISE507.508.merge 16.90
Hungary_BA:I1504             14.85
Unetice:I0115                 7.40
Scythian_Pazyryk:I0563        6.50
Minoan_Odigitria:I9128        6.25
Latvia_HG:ZVEJ32              5.25
Minoan_Lasithi:I0073          1.80

4) Ancients Europe + Asia wide (Bronze Age, Iron Age)
"distance%=0.1311 / distance=0.001311"
Code:
         Dorkymon
                                  
Unetice:I0047                32.75
Hungary_BA:I1504             25.90
Minoan_Lasithi:I0071         16.45
Scythian_Pazyryk:I0563        7.55
Unetice:I0115                 6.40
Portugal_BA:TV32032extra      4.50
England_IA:M1489              2.50
Afanasievo:RISE507.508.merge  2.40
Corded_Ware_Germany:I1534     1.25
Hungary_BA:I1502              0.30

5) Ancients Central + Southeastern + Eastern Europe + Asia (Bronze Age, Iron Age)
"distance%=0.1328 / distance=0.001328"
Code:
         Dorkymon
                                  
Unetice:I0047                31.20
Hungary_BA:I1504             30.00
Minoan_Lasithi:I0071         16.55
Scythian_Pazyryk:I0563        7.40
Bell_Beaker_Germany:I0113     5.55
Corded_Ware_Germany:I1534     4.30
Unetice:I0115                 3.50
Hungary_BA:I1502              1.15
Scythian_AldyBel:I0577        0.35

6) Ancients Central + Southeastern + Eastern Europe + Asia (Bronze Age, Iron Age) + Slav_Czech Early Medieval
"distance%=0.058 / distance=0.00058"
Code:
         Dorkymon
                               
Unetice:I0047             33.30
Slav_Czech:RISE568        21.55
Minoan_Lasithi:I0070       8.10
Minoan_Odigitria:I9128     8.00
Scythian_Pazyryk:I0562     6.10
Minoan_Lasithi:I0074       5.85
Bell_Beaker_Germany:I0806  5.60
Hungary_BA:I1502           5.00
Scythian_Pazyryk:I0563     2.05
Unetice:I0116              1.95
Hungary_CA:I1497           1.50
Corded_Ware_Germany:I1534  1.00

7) Ancients (average) Europe + Asia wide (Bronze Age, Iron Age) + Slav_Czech Early Medieval
"distance%=0.1676 / distance=0.001676"
Code:
         Dorkymon
                      
Slav_Czech       29.05
Hungary_BA       23.60
Minoan_Lasithi   22.45
Halberstadt_LBA   9.65
Yamnaya_Samara    8.00
Scythian_Pazyryk  7.25

8) Ancients (average) Europe + Asia wide (Bronze Age, Iron Age)
"distance%=0.2591 / distance=0.002591"
Code:
         Dorkymon
                      
Hungary_BA       42.30
England_IA       20.40
Minoan_Lasithi   15.50
Scythian_Pazyryk  7.60
Halberstadt_LBA   6.30
Yamnaya_Kalmykia  4.45
Satsurblia        2.95
Hungary_IA        0.50

9) Ancients (average) Central + Southeastern + Eastern Europe + Asia (Bronze Age, Iron Age) + Slav_Czech Early Medieval
"distance%=0.1676 / distance=0.001676"
Code:
         Dorkymon
                      
Slav_Czech       28.95
Hungary_BA       23.75
Minoan_Lasithi   22.45
Halberstadt_LBA   9.55
Yamnaya_Samara    8.05
Scythian_Pazyryk  7.25

10) Ancients (average) Central + Southeastern + Eastern Europe + Asia (Bronze Age, Iron Age)
"distance%=0.2661 / distance=0.002661"
Code:
         Dorkymon
                      
Hungary_BA       51.80
Minoan_Lasithi   16.65
Halberstadt_LBA  13.40
Yamnaya_Kalmykia  7.90
Scythian_Pazyryk  7.65
Satsurblia        2.60