what age do these breeds mature?

[sydney13]

i have a cochin, brahma, orpington, easter egger, barred rock, and a jersey giant. so what age will each of these reach the mature weight?

 

[LarryPQ]

This may help:
https://www.backyardchickens.com/breeds/breed-chart


The bigger they are, the longer they take. Expect ~24 weeks on the big ones ~20 weeks for the EEs.