We don't supplement light and don't intend to.
We are getting plenty of eggs for eating for other hens...
Some chickens seem able to lay eggs during naturally short winter days, and some do not.
I don't know why that is so, but I would guess that your Orpingtons are taking the winter off, and that your other hens are from breeds that are better layers.
The Orpingtons will probably start laying again when the days get longer in the spring.
If you get an incubator, you can hatch the eggs as soon as they start laying.
Or you can wait to see if a hen goes broody, and try to have her do the incubating and chick raising.
My older hens have become broody natural with no rooster in sight
A rooster can fertilize the eggs, but does not affect whether the hens go broody.
If one of your other hens goes broody, you can put Orpington eggs under her, so she can hatch them and raise the chicks.
A broody hen does not care whether she hatches her own eggs or eggs from some other hen.