Try this Iron Age G25 calc I found on Eupedia

[Oturan Boğa]

Target: OturanBoga_scaled
Distance: 2.7558% / 0.02755829
39.8 TUR_Ottoman
33.4 Levante
13.6 Slavic
13.2 Imperial_Roman_mixed

Since there is no Anatolian it picks Levant as an Anatolian proxy.

Distance to:	OturanBoga_scaled
0.10790408	Imperial_Roman_mixed:ITA_Collegno_MA_o1
0.10850607	Imperial_Roman_mixed:ITA_Rome_Imperial
0.11171632	Germanic_Celtic:DEU_MA_ACD_Baiuvaric
0.12394078	Levante:Levant_LBN_Roman
0.12555224	Levante:Levant_LBN_MA
0.13158264	Balkan_IA_West:HRV_IA
0.13241922	Balkan_IA_East:BGR_IA
0.13271898	Balkan_IA_West:HRV_EIA
0.13428422	Balkan_IA_East:GRC_Mycenaean
0.13656416	Pannonian_IA:SVK_IA_Vekerzug
0.14096377	Balkan_IA_West:ITA_Daunian
0.14178657	Pannonian_IA:HUN_EIA_Prescythian_Mezocsat
0.14182070	Italic_Etruscan_IA:ITA_Etruscan
0.14291162	TUR_Ottoman
0.14842703	Slavic:CZE_Early_Slav
0.14944445	Imperial_Roman_mixed:DEU_Roman
0.15184303	Germanic_Celtic:FRA_Alsace_IA2
0.15250433	Italic_Etruscan_IA:ITA_Rome_Latini_IA
0.15252224	Germanic_Celtic:DEU_MA
0.15278130	Italic_Etruscan_IA:ITA_Prenestini_tribe_IA
0.15383336	Germanic_Celtic:FRA_Alsace_IA1
0.15672529	Imperial_Roman_mixed:England_Roman_Near_Eastern_o
0.15788300	Pannonian_IA:HUN_LBA
0.15932701	Germanic_Celtic:SWE_IA
0.15958745	Germanic_Celtic:CZE_Hallstatt_Bylany

[Damião de Góis]

Don´t complain so much, my parents and I are Etruscans

But you aren't 0% Iberian like me.

[hazmatnik]

Target: aunt2_scaled
Distance: 1.6903% / 0.01690268
56.0 Slavic
37.8 Balkan_IA_East
5.4 Imperial_Roman_mixed
0.8 North_and_East_Asian

Target: aunt1_scaled
Distance: 2.2308% / 0.02230786
53.2 Slavic
17.4 Balkan_IA_West
16.0 Balkan_IA_East
13.4 Levante

Target: nikola_scaled
Distance: 2.8593% / 0.02859270
52.2 Slavic
21.4 Balkan_IA_West
14.2 Balkan_IA_East
10.8 Imperial_Roman_mixed
1.4 Levante

[JamesBond007]

Target: OturanBoga_scaled
Distance: 2.7558% / 0.02755829
39.8 TUR_Ottoman
33.4 Levante
13.6 Slavic
13.2 Imperial_Roman_mixed

Since there is no Anatolian it picks Levant as an Anatolian proxy.

Distance to:	OturanBoga_scaled
0.10790408	Imperial_Roman_mixed:ITA_Collegno_MA_o1
0.10850607	Imperial_Roman_mixed:ITA_Rome_Imperial
0.11171632	Germanic_Celtic:DEU_MA_ACD_Baiuvaric
0.12394078	Levante:Levant_LBN_Roman
0.12555224	Levante:Levant_LBN_MA
0.13158264	Balkan_IA_West:HRV_IA
0.13241922	Balkan_IA_East:BGR_IA
0.13271898	Balkan_IA_West:HRV_EIA
0.13428422	Balkan_IA_East:GRC_Mycenaean
0.13656416	Pannonian_IA:SVK_IA_Vekerzug
0.14096377	Balkan_IA_West:ITA_Daunian
0.14178657	Pannonian_IA:HUN_EIA_Prescythian_Mezocsat
0.14182070	Italic_Etruscan_IA:ITA_Etruscan
0.14291162	TUR_Ottoman
0.14842703	Slavic:CZE_Early_Slav
0.14944445	Imperial_Roman_mixed:DEU_Roman
0.15184303	Germanic_Celtic:FRA_Alsace_IA2
0.15250433	Italic_Etruscan_IA:ITA_Rome_Latini_IA
0.15252224	Germanic_Celtic:DEU_MA
0.15278130	Italic_Etruscan_IA:ITA_Prenestini_tribe_IA
0.15383336	Germanic_Celtic:FRA_Alsace_IA1
0.15672529	Imperial_Roman_mixed:England_Roman_Near_Eastern_o
0.15788300	Pannonian_IA:HUN_LBA
0.15932701	Germanic_Celtic:SWE_IA
0.15958745	Germanic_Celtic:CZE_Hallstatt_Bylany

Yeah, I think I have pretty high distance (not under 3) because of lack of British isles samples so it seems pretty politically motivated:

England_IA added :

Target: Kevin_scaled
Distance: 2.5242% / 0.02524192 | ADC: 0.25x RC
92.2 insular_Celtic:England_IA
3.2 TUR_Ottoman
3.2 Pannonian_IA:HUN_LBA_Halva
1.4 Italic_Etruscan_IA:ITA_Rome_Latini_IA

Icelandic_viking added

Target: Kevin_scaled
Distance: 1.8553% / 0.01855294 | ADC: 0.25x RC
84.6 Germanic:_Celtic:ISL_Viking_Age_Pre_Christian
13.4 Italic_Etruscan_IA:ITA_Rome_Latini_IA
2.0 TUR_Ottoman

[Creoda]

Target: Creoda_scaled
Distance: 2.4333% / 0.02433297
91.4	Germanic_Celtic
4.8	Italic_Etruscan_IA
3.8	Iberia

Target: Creoda_scaled
Distance: 2.4333% / 0.02433297
83.6	Germanic_Celtic:DEU_MA
5.8	Germanic_Celtic:SWE_Viking_Age_Sigtuna
4.8	Italic_Etruscan_IA:ITA_Prenestini_tribe_IA
3.8	Iberia:Iberia_North_IA
2.0	Germanic_Celtic:FRA_Alsace_IA1

[Wizz]

Do you have anything I can convert K13 or K15 to G25 ?

[noricum]

Target: G25noricum_scaled
Distance: 2.1622% / 0.02162170
42.6 Slavic
29.0 Balkan_IA_West
28.0 Germanic_Celtic
0.4 Levante

Distance to: G25noricum_scaled
0.04179251 Germanic_Celtic:FRA_Alsace_IA2
0.04296864 Germanic_CelticEU_MA
0.04341445 Slavic:CZE_Early_Slav
0.04345842 Pannonian_IA:SVK_IA_Vekerzug
0.04458869 Pannonian_IA:HUN_EIA_Prescythian_Mezocsat
0.04580652 Germanic_Celtic:SWE_IA
0.04744556 Pannonian_IA:HUN_LBA
0.04924678 Germanic_Celtic:CZE_Hallstatt_Bylany
0.04984157 Germanic_Celtic:SWE_Viking_Age_Sigtuna
0.05239328 Germanic_CelticEU_MA_ACD_Baiuvaric
0.05732512 Slavic:HUN_Avar_Szolad:Av2
0.05885534 Germanic_Celtic:FRA_Alsace_IA1
0.06008500 SlavicEU_Krakauer_Berg_MA
0.06171914 Pannonian_IA:HUN_LBA_Halva
0.07185769 Balkan_IA_West:HRV_EIA
0.07426908 Iberia:Iberia_North_IA
0.07790835 Imperial_Roman_mixedEU_Roman
0.07885834 Italic_Etruscan_IA:ITA_Prenestini_tribe_IA
0.08345309 Balkan_IA_West:HRV_IA
0.08490888 Italic_Etruscan_IA:ITA_Etruscan
0.09209122 Iberia:Iberia_East_IA
0.10345968 Iberia:Iberia_IA
0.10729310 Balkan_IA_West:ITA_Daunian
0.11220702 Italic_Etruscan_IA:ITA_Rome_Latini_IA
0.12648572 Balkan_IA_East:BGR_IA

[PT Tagus]

Target: Endovelicus_scaled
Distance: 1.4544% / 0.01454383

38.6 Iberia:Iberia_North_IA
20.0 Italic_Etruscan_IA:ITA_Prenestini_tribe_IA
11.2 Imperial_Roman_mixed:England_Roman_Near_Eastern_o
10.0 Germanic_Celtic: DEU_MA
5.0 Levante:Levant_LBN_MA
5.0 Balkan_IA_West:ITA_Daunian
3.6 Berber_Tunisia_Chen
3.0 Yoruba
2.4 Italic_Etruscan_IA:ITA_Etruscan
1.2 Balkan_IA_West:HRV_IA

Distance to:	Endovelicus_scaled
0.05129591	Imperial_Roman_mixed:DEU_Roman
0.05211309	Italic_Etruscan_IA:ITA_Etruscan
0.05251313	Balkan_IA_West:HRV_EIA
0.05451675	Italic_Etruscan_IA:ITA_Prenestini_tribe_IA
0.06040242	Balkan_IA_West:ITA_Daunian
0.06146108	Pannonian_IA:SVK_IA_Vekerzug
0.06148783	Iberia:Iberia_North_IA
0.06178605	Balkan_IA_West:HRV_IA
0.06204446	Pannonian_IA:HUN_EIA_Prescythian_Mezocsat
0.06399787	Iberia:Iberia_East_IA
0.06864400	Germanic_Celtic:FRA_Alsace_IA1
0.07199948	Italic_Etruscan_IA:ITA_Rome_Latini_IA
0.07212626	Germanic_Celtic:DEU_MA_ACD_Baiuvaric
0.07550981	Pannonian_IA:HUN_LBA
0.07740635	Germanic_Celtic:CZE_Hallstatt_Bylany
0.07783523	Germanic_Celtic:FRA_Alsace_IA2
0.08278088	Iberia:Iberia_IA
0.08305121	Balkan_IA_East:BGR_IA
0.09077524	Germanic_Celtic:DEU_MA
0.09407429	Imperial_Roman_mixed:ITA_Rome_Imperial
0.09507416	Imperial_Roman_mixed:ITA_Collegno_MA_o1
0.09758891	Balkan_IA_East:GRC_Mycenaean
0.10234577	Pannonian_IA:HUN_LBA_Halva
0.10478361	Germanic_Celtic:SWE_IA
0.10616156	Slavic:CZE_Early_Slav

[celticdragongod]

Distance to: CDG_scaled
0.02427956 Germanic_CelticEU_MA
0.03203976 Germanic_Celtic:SWE_IA
0.03792881 Germanic_Celtic:SWE_Viking_Age_Sigtuna
0.04376688 Germanic_Celtic:FRA_Alsace_IA2
0.04814270 Germanic_Celtic:CZE_Hallstatt_Bylany
0.04971732 Germanic_Celtic:FRA_Alsace_IA1
0.05818268 Germanic_CelticEU_MA_ACD_Baiuvaric
0.05883725 Pannonian_IA:HUN_LBA
0.06041575 Pannonian_IA:HUN_EIA_Prescythian_Mezocsat
0.06120997 Slavic:CZE_Early_Slav
0.06143775 Pannonian_IA:SVK_IA_Vekerzug
0.06859559 Pannonian_IA:HUN_LBA_Halva
0.07218257 Iberia:Iberia_North_IA
0.07397846 Italic_Etruscan_IA:ITA_Prenestini_tribe_IA
0.07495711 Slavic:HUN_Avar_Szolad:Av2
0.07540097 SlavicEU_Krakauer_Berg_MA
0.07860960 Balkan_IA_West:HRV_EIA
0.08309748 Imperial_Roman_mixedEU_Roman
0.09044717 Iberia:Iberia_East_IA
0.09289465 Italic_Etruscan_IA:ITA_Etruscan
0.09370006 Balkan_IA_West:HRV_IA
0.10349812 Iberia:Iberia_IA
0.11331547 Italic_Etruscan_IA:ITA_Rome_Latini_IA
0.11502190 Balkan_IA_West:ITA_Daunian
0.14036009 Balkan_IA_East:BGR_IA

Target: CDG_scaled
Distance: 2.2051% / 0.02205108
48.6 Germanic_CelticEU_MA
25.0 Germanic_Celtic:SWE_IA
11.6 Germanic_Celtic:FRA_Alsace_IA1
7.4 Germanic_Celtic:SWE_Viking_Age_Sigtuna
7.4 Italic_Etruscan_IA:ITA_Prenestini_tribe_IA

Target: CDG_scaled
Distance: 2.2107% / 0.02210691 | ADC: 0.25x RC
53.8 Germanic_CelticEU_MA
27.4 Germanic_Celtic:SWE_IA
14.2 Germanic_Celtic:FRA_Alsace_IA1
4.6 Italic_Etruscan_IA:ITA_Prenestini_tribe_IA

[Beowulf]

Target: ivanFTDNA
Distance: 1.1817% / 0.01181744
27.4 Iberia
27.0 Balkan_IA_West
21.4 Germanic_Celtic
7.6 Berber_Tunisia_Chen
7.4 Italic_Etruscan_IA
6.4 Pannonian_IA
2.8 Imperial_Roman_mixed