Through all three versions, it reflects the story of women expressing their curiosity in the unknown by trying to figure out what is in the mysterious chamber. They use the key that was given to them by their husband to unlock the door, that eventually gets covered in blood and it remains stained magically even after attempting to clean it off. The husband of the wife finds out about their betrayal and sets out to kill her and tells her she can join the rest of the dead females that failed the test beforehand. Ultimately, all these stories end with the wife calling out for help from her brothers that are in the forest. They come just in the nick of time to stop the husband from killing their sister.
Some differences that occur within the three versions would be in Fitcher’s Bird, the maiden is given an egg rather than a key and the wizards tests three women rather than just one singular woman. In The Robber’s Bridegroom, the wife sees her soon to be husband attacking a woman with his friends.
In Bluebeard, Bluebeard has a blue beard, which also mimics the royalty at that time when they used to dye their beards blue to show their status. In Fitcher’s Bird, she turns herself into a bird by covering honey and feathers. This can symbolize her rebirth. In The Robber’s Bridegroom, the bridegroom sees the terrifying crimes that her fiancé commits, and retells it to her father on her wedding day. 
I didn’t have a favorite tale between the three versions of Bluebeard because it is not a story that I would wish to reread. This tale didn’t appeal to me because of the basic underlying message of the story. It is the story of the husband giving the key to his wife and then telling her to not go into the room, then she is punished for her curiosity when her husband attempts to kill her. The part of this story that I like is the sibling relationship, it shows that when you are in trouble that your family will always have your back no matter how far away, they are. I am also not a big fan of The Robber’s Bridegroom due to the bridegroom having to deal with the close abusiveness of her soon to be husband. I also do not enjoy the overall theme of the bridegroom’s curiosity landing her to be punished by her husband in death. 