I let my broody hens hatch home-grown Easter Egger chicks, then add feed store/hatchery chicks of pure breeds in with the home-hatchees. (Meaning all chicks are broody-raised.) By choosing eggs i want the broodies to hatch, i can select for largest egg sizes and prettiest colors, & can also select for feather colors. After several years and generations of hatching, egg sizes usually reach xlarge by the end of a pullet's first summer of laying. And from my older easter egger hens, i get many blue and green jumbo eggs. (When i bought my original easter eggers, their lay rate was excellent, but egg size was too small for my liking. Plus most were the typical partridge color.) By selecting my own hatching eggs, i can also choose the freshest, most perfectly formed eggs, which leads to a 90-100% hatch rate.
Having to cull excess cockerels that had the bad luck to be born male is a definite downside to hatching at home. As far as ratio of pullets to cockerels, i'd say the overall long-term ratio is about 50%. But some instances do stand out. I remember one broody hatched 6 chicks, & 5 were cockerels. One month, 2 broodys hatched 16 chicks combined, & 11 were cockerels. But this past october 2020, 5 broodies hatched 33 chicks, & 27 were pullets!