16% is the bare minimum for layers in the US (other parts of the world use more individual amino acids as ingredients so can meet the needs of the birds with lower over all protein.) So more protein is better while they are molting.
The best option is the 21% feed for meat birds with calcium...
The others should not get layer feed for the months until they start laying again.
Better are:
All Flock
Feather fixer
Chick starter
Grower
Other such options without the extra calcium
With calcium in a different dish for the hen who is still laying. And for them to take as needed as they...