So those are my Google Keep notes on hypothetical chicken breeds.
Based on phenotype but also genetics,
From synbreed and similar studies.
Laying western med
Stock: combatiente español, Andaluza azul.
Lightweight early maturing, small efficient layer of medium-large pure white shelled eggs
All colours from CE in henny.
Yellow face spanish
Pheno: Buff leghorn, CB, Buff prat
Genetics:
Combatiente, CB
Clavellada (Carnation bantam)
Flor d'ametller, Pairal
No black, no blue
Dorlisle
"Classic table fowl"
Dorking X Carlisle OEG
Spanglayer/ Spangleger
Appenzeller x Hamburg
Euro Meat Bird
Bruge vechter x OEGB
And sebright X Indian game/bantam
Oriental
O-rzong
Dong Tao X KO Shamo,
Long tail erect stance, large size fast growing heavy muscled
Ko-choi
Ga-noi (CI "choi") X KO-shamo
Dong Tao x Showgirl
Five fingers dragon feet black skin naked neck
Ultimate Crower
Koeyoshi x Kosovo crower
Rumbling red layer
Brown layers X Kosovo crower
Low pitched crowing, excellent layer.
Shogun layer
Totenko
Ohiki
Onagadori
Chabo
KO shamo
SMURF
White faced Spanish bantam X lavander silkie X araucana
Blue face, lavander, blue eggs
White faced spanish x g.varius
Koeyoshi x g.varius
Spanish x Koeyoshi
Arbequinesa
Empordanesa
x White german Araucana 
Pruïna
Prat millorada x White german Araucana
Worth mentioning breeds
G. varius influence?
Koeyoshi, yamato gunkei
Least admixed breeds
HAp cluster
Hamburg and Appenzeller
EUROPEAN
Rhinelander black
Belgian schlotterkamme black
Krüpfer black
Sebright
Japanese cluster
Totenko
Ohiki silver
Based on phenotype but also genetics,
From synbreed and similar studies.
Laying western med
Stock: combatiente español, Andaluza azul.
Lightweight early maturing, small efficient layer of medium-large pure white shelled eggs
All colours from CE in henny.
Yellow face spanish
Pheno: Buff leghorn, CB, Buff prat
Genetics:
Combatiente, CB
Clavellada (Carnation bantam)
Flor d'ametller, Pairal
No black, no blue
Dorlisle
"Classic table fowl"
Dorking X Carlisle OEG
Spanglayer/ Spangleger
Appenzeller x Hamburg
Euro Meat Bird
Bruge vechter x OEGB
And sebright X Indian game/bantam
Oriental
O-rzong
Dong Tao X KO Shamo,
Long tail erect stance, large size fast growing heavy muscled
Ko-choi
Ga-noi (CI "choi") X KO-shamo
Dong Tao x Showgirl
Five fingers dragon feet black skin naked neck
Ultimate Crower
Koeyoshi x Kosovo crower
Rumbling red layer
Brown layers X Kosovo crower
Low pitched crowing, excellent layer.
Shogun layer
Totenko
Ohiki
Onagadori
Chabo
KO shamo
SMURF
White faced Spanish bantam X lavander silkie X araucana
Blue face, lavander, blue eggs
White faced spanish x g.varius
Koeyoshi x g.varius
Spanish x Koeyoshi
Arbequinesa
Empordanesa


Pruïna
Prat millorada x White german Araucana
Worth mentioning breeds
G. varius influence?
Koeyoshi, yamato gunkei
Least admixed breeds
HAp cluster
Hamburg and Appenzeller
EUROPEAN
Rhinelander black
Belgian schlotterkamme black
Krüpfer black
Sebright
Japanese cluster
Totenko
Ohiki silver