I just had a careful look at your photos. That doesn’t look typical of a used queen cell to me. It is a bit thick and short. Are you certain that there was royal jelly and a grub in it?
Second hive, yes there are lot of queen cups. Unfortunately none of your photos shows the inside of the cups, so it is hard to know whether they are occupied by a grub. I don’t see any very young larvae or eggs, but there is both capped and uncapped brood. As the photos all look like they are from the same frame, it is hard to assess whether you have a laying queen in there now.
You should read that document I linked for you above!