A bantam cochin and a bantam WFB Spanish. There are two other hens only a year or so younger that laid consistently until last year too, a leghorn mix (who had shell issues with every egg, even as a pullet) and an EE
I gotta second this. It's winter now, but heck, I had two 10 year old hens laying decently last summer. I have other birds far younger that struggle to come close to them.