All I've had were small for leghorns. Also a lot of combs with too many points and hard to maintain the nice yellow legs.
There may be an as yet unknown variety there.
Know what? In my mind, I'm always thinking -- this next generation will be "better". Sometimes I will wonder if my human interference will not have the expected effect.
Interestingly, my oldest resident here is a Cream Legbar that's passed her 6th birthday and she still lays. She had a poopy butt (TMI I know) and I was so proud of how good she looked after I gave her a bath -- and she left me an egg in the pet carrier I had her in - so, zero doubt it was hers. That being said, her egg size is getting smaller. I think that her frequency and her size of eggs is diminishing. Well and good (I didn't even know they could live that long)---
My "favorite" project hen has started to lay smaller eggs. She's pretty much a daily layer, but the eggs seem to be under 2oz. now. So as much as I like her type best, her egg size is the worst. But her look and color are the best. Regarding using her for a breeder, then 1/2 her genetics have her pattern, and the cockerel passes along what his sisters have. Same with the looks - but that factor from the male is at least visible --good barring, good coloration, low tail angle, long back. You just never know 100%. Part of the challenge isn't it?

If it was just about eggs, then she shouldn't be selected for breeding. On the other end of the spectrum, someone (Or ones) produce double yolks -- huge eggs that are 3.4 oz. Depending on your usage, (baking is my example) -- double yolks aren't always desirable.
ETA - The reason I aim for 2oz to 2.25 eggs is that is what recipies call for generally. I know for some people 'the bigger the better' -- Those double yolks were good breakfast eggs.