OP - you do know that some of the dolls being sold today are still marked Pleasant Company on their necks right? It's in the molds they use and most have been changed but not every doll.
Gosh, that is so sad. I don't think I've ever seen four dolls together so totally trashed and I've seen hundreds, if not thousands, of AG dolls over the past twenty-two years since I bought my first one just before DD21 was born.
Molly has silver eye. They'll repair that for free and hopefully take pity on her and replace the entire head without cost if you ask and pay for the body.
All of the fabric bodies probably won't come clean and I'm guessing quite a few of the marks on the vinyl arms/legs are probably there to stay too though, you could try Oxy10 and sunlight on the worst marks to try to remove or fade them.
Those poor girls, they've obviously had a very rough life. It's great that you saved them from the landfill but they're not going to be your easy ebay sales either. Definitely list the clothing pieces individually for best results and good luck with it all....