HenriettaPizzaNolan
Raising Layers and Meat Birds in the City
Like someone else has said, stay away from the "production" breeds like ISAs, Golden Comets, Sex Links, etc. if you want them for pets. They are great chickens but unfortunately their genetics cause them to have reproductive issues after year 2. It's almost inevitable.
Someone else suggested a few breeds (RIR, Orpington, Australorp) and those are excellent choices. I also want to add Barred Rock, Jersey Giant, and Salmon Faverolles. I've found those to be healthy breeds so far. They lay slightly fewer eggs than your ISAs, but because of that it's easier on their reproductive system and they typically live a little longer.
Sorry for your loss and best of luck moving forward!
Someone else suggested a few breeds (RIR, Orpington, Australorp) and those are excellent choices. I also want to add Barred Rock, Jersey Giant, and Salmon Faverolles. I've found those to be healthy breeds so far. They lay slightly fewer eggs than your ISAs, but because of that it's easier on their reproductive system and they typically live a little longer.

Sorry for your loss and best of luck moving forward!