Found some photos of chickens that look similar to Ash's coloring:
https://www.backyardchickens.com/threads/do-you-have-pics-of-a-barred-rock-buff-orp-cross.112415/#post-1309918
They are from a cross of Barred Rock and Buff Orpington.
That's not going to work the way you hope it will.
For starters, Rosaline was not a straight cross between Ameraucana and White Leghorn.
Your proposed F1 cross is not going to produce chickens like Rosaline. Rosaline had a clean face, and it sounds like all of her daughters laid eggs in some...