How long have you had them? If for several months, then most should come back when they get hungry.
But if you let out adult homers form another loft they will likely try to fly back to their home loft.
The other breeds won't usually do this, but they might have tried to follow the homers and got lost
If they come back you should keep the birds in the coop all the time, and only let them out to fly once or twice a day, and at the end of the flying time call them straight back into the coop to feed them.
Don't let the birds free range all day and just come back to roost. You will loose many to predators, they will annoy neighbours, they will get into accidents and all sorts of trouble.
I hope they come back to you soon.. keeping my fingers crossed.