Honestly I find it hard to name a chicken until I see it in person. But I think you should name one of them Maggie. Don’t ask me why Maggie the last hen just looks like a Maggie.
I also need to figure out how to tell them apart. I'm usually good at that sort of thing, but like I said they are not tame at all and will freak out if you come close to the door.
Some people use colored zip ties but be EXTREMELY CAREFUL with them and don’t make them too tight. I can tell my 4 light brahmas apart just by looking at their faces.